Difference between revisions of "LibreOffice-Suite-Math/C2/Using-Greek-characters-Brackets-Steps-to-Solve-Quadratic-Equation/English-timed"

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|-
 
|-
 
||00:00
 
||00:00
−
||Welcome to the Spoken tutorial on LibreOffice Math.
+
||Welcome to the '''Spoken tutorial''' on '''LibreOffice Math'''.
  
 
|-
 
|-
Line 13: Line 13:
 
|-
 
|-
 
||00:08
 
||00:08
−
||Using Greek characters like alpha, beta, theta and pi
+
||Using '''Greek''' characters like '''alpha, beta, theta''' and '''pi'''.
  
 
|-
 
|-
 
||00:15
 
||00:15
−
||Using Brackets. Writing Steps to solve a Quadratic Equation
+
||Using '''Bracket'''s. * Writing steps to solve a quadratic equation.
  
 
|-
 
|-
 
||00:21
 
||00:21
−
||Let us learn how to write Greek characters using Math.
+
||Let us learn how to write Greek characters using '''Math'''.
  
 
|-
 
|-
 
||00:26
 
||00:26
−
||For this, let us first open the example Writer document that we created in the last tutorial i.e. MathExample1.odt.
+
||For this, let us first open the example '''Writer''' document that we created in the last tutorial i.e. "MathExample1.odt".
  
 
|-
 
|-
 
||00:41
 
||00:41
−
||Double click on the Gray box that has the formulae we wrote.
+
||Double-click on the Gray-box that has the formulae we wrote.
  
 
|-
 
|-
 
||00:47
 
||00:47
−
||This brings up the Math Formula Editor and the Elements window.
+
||This brings up the '''Math Formula Editor''' and the '''Elements''' window.
  
 
|-
 
|-
 
||00:54
 
||00:54
−
||Let us click on the Formula Editor border and drag and drop to the right to make it float.
+
||Let us click on the '''Formula Editor''' border and drag and drop to the right to make it float.
  
 
|-
 
|-
 
||01:02
 
||01:02
−
||This maximizes the Writer window for better visibility.
+
||This maximizes the '''Writer''' window for better visibility.
  
 
|-
 
|-
 
||01:07
 
||01:07
−
||Now Greek characters, for example, alpha, beta, theta and pi are common in mathematical formulas.
+
||Now, Greek characters- for example: alpha, beta, theta and pi are common in mathematical formulae.
  
 
|-
 
|-
 
||01:16
 
||01:16
−
||But we won’t find these characters in the Elements window.  
+
||But, we won’t find these characters in the '''Elements''' window.  
  
 
|-
 
|-
 
||01:21
 
||01:21
−
||We can write them directly, by using the percentage sign followed by the name of the character in English.
+
||We can write them directly by using the percentage sign followed by the name of the character in English.
  
 
|-
 
|-
 
||01:30
 
||01:30
−
||For example, to write pi, we simply type %pi in the Formula Editor
+
||For example- to write '''pi''', we simply type "%pi" in the '''Formula Editor'''.
  
 
|-
 
|-
Line 65: Line 65:
 
|-
 
|-
 
||01:47
 
||01:47
−
||For example, to write alpha in lower case, type %alpha or %beta  
+
||For example- to write alpha in lower case, type "%alpha" or "%beta".
  
 
|-
 
|-
Line 73: Line 73:
 
|-
 
|-
 
||02:06
 
||02:06
−
||For example to write gamma in upper case, type %GAMMA or %THETA
+
||For example- to write gamma in upper case, type "%GAMMA" or "%THETA".
  
 
|-
 
|-
 
||02:17
 
||02:17
−
||Another way to enter Greek characters is by using the Catalog from the Tools menu.
+
||Another way to enter Greek characters is by using the '''Catalog''' from the '''Tools''' menu.
  
 
|-
 
|-
 
||02:26
 
||02:26
−
||Under the Symbol set, select Greek  
+
||Under the '''Symbol set''', select '''Greek'''
  
 
|-
 
|-
 
||02:31
 
||02:31
−
||and double click on a Greek letter from the list.
+
||and double-click on a Greek letter from the list.
  
 
|-
 
|-
 
||02:35
 
||02:35
−
||Notice the mark up for the Greek letter as alpha which is displayed below the list.
+
||Notice the '''mark up''' for the Greek letter as alpha which is displayed below the list.
  
 
|-
 
|-
 
||02:43
 
||02:43
−
||So this is how we can introduce Greek characters in a formula.
+
||So, this is how we can introduce Greek characters in a formula.
  
 
|-
 
|-
 
||02:49
 
||02:49
−
||Explore the Symbols Catalog to know the mark up for other Greek characters.
+
||Explore the '''Symbols Catalog''' to know the '''mark up''' for other Greek characters.
  
 
|-
 
|-
 
||02:56
 
||02:56
−
||Let us now learn how to use Brackets in our formulae.
+
||Let us now learn how to use '''Bracket'''s in our formulae.
  
 
|-
 
|-
 
||03:02  
 
||03:02  
−
||Math does not know about order of operation in a formula.  
+
||'Math' does not know about order of operation in a formula.  
  
 
|-
 
|-
 
||03:07
 
||03:07
−
||So we have to use Brackets to state the order of operation.
+
||So, we have to use brackets to state the order of operation.
  
 
|-
 
|-
 
||03:13
 
||03:13
−
||For example, how do we write ‘First add x and y, then divide 5 by the result’?
+
||For example, how do we write: First add x and y, then divide 5 by the result?
  
 
|-
 
|-
 
||03:22
 
||03:22
−
||We can type ‘ 5 over x + y ‘.  
+
||We can type: "5 over x + y".  
  
 
|-
 
|-
 
||03:28
 
||03:28
−
||Now is this really what we wanted to write?
+
||Now, is this really what we wanted to write?
  
 
|-
 
|-
 
||03:32
 
||03:32
−
||No, we want to add x and y first, and we can do this, by introducing curly brackets around x and y.  
+
||No. We want to add x and y first and we can do this by introducing curly brackets around x and y.  
  
 
|-
 
|-
 
||03:44
 
||03:44
−
||And the mark up looks like: ‘5 over x+y in curly brackets’
+
||And the '''mark up''' looks like: 5 over x+y in curly brackets.
  
 
|-
 
|-
 
||03:52
 
||03:52
−
||So using brackets can help set the order of operation in a formula.
+
||So, using brackets can help set the order of operation in a formula.
  
 
|-
 
|-
 
||03:58
 
||03:58
−
||Let us save our work by using the File menu at the top and choosing Save.
+
||Let us '''save''' our work by using the '''File''' menu at the top and choosing '''Save'''.
  
 
|-
 
|-
 
||04:08
 
||04:08
−
||Let us now write the steps to solve a Quadratic Equation.
+
||Let us now write the steps to solve a quadratic equation.
  
 
|-
 
|-
 
||04:13
 
||04:13
−
||We will go to new page in the Writer document, by pressing Control + Enter.
+
||We will go to new page in the '''Writer document''' by pressing '''Control + Enter'''.
  
 
|-
 
|-
 
||04:21
 
||04:21
−
||Let us type: ‘Solving a Quadratic Equation’
+
||Let us type: "Solving a Quadratic Equation"
  
 
|-
 
|-
 
||04:25
 
||04:25
−
||And call Math from the Insert>Object>Formula menu
+
||and call '''Math''' from the '''Insert > Object > Formula''' menu.
  
 
|-
 
|-
 
||04:33
 
||04:33
−
||I have already typed the quadratic equations, I will cut and paste them so as to save time.
+
||I have already typed the quadratic equations. I will '''cut''' and '''paste''' them so as to '''save''' time.
  
 
|-
 
|-
 
||04:42
 
||04:42
−
||So here is the quadratic equation we will solve, x squared - 7 x + 3 = 0  
+
||So, here is the quadratic equation we will solve: x squared - 7 x + 3 = 0  
  
 
|-
 
|-
 
||04:53
 
||04:53
−
||To solve it, we can use the quadratic formula shown on the screen:
+
||To solve it, we can use the quadratic formula shown on the screen.
  
 
|-
 
|-
 
||04:59
 
||04:59
−
||Here ‘a’ is the coefficient of the x squared term, ‘b’ is the coefficient of the x term and ‘c’ is the constant.
+
||Here, ‘a’ is the coefficient of the 'x' squared term, ‘b’ is the coefficient of the 'x' term and ‘c’ is the constant.
  
 
|-
 
|-
 
||05:11
 
||05:11
−
||And we can solve the equation by substituting 1 for a, -7 for b, and 3 for c in the formula.
+
||And we can solve the equation by substituting 1 for a, -7 for b, and 3 for c, in the formula.
  
 
|-
 
|-
 
||05:23
 
||05:23
−
||So first let us write the mark up for the quadratic equation that we want to solve.
+
||So, first let us write the '''mark up''' for the quadratic equation that we want to solve.
  
 
|-
 
|-
 
||05:30
 
||05:30
−
||First we will call Math from the Insert>Object>Formula menu
+
||First, we will call '''Math''' from the '''Insert > Object > Formula''' menu.
  
 
|-
 
|-
 
||05:39
 
||05:39
−
||In the Format Editor Window, let us type the mark up as follows:  
+
||In the '''Format Editor''' window, let us type the '''mark up''' as follows:  
  
 
|-
 
|-
 
||05:46
 
||05:46
−
||x squared minus 7 x plus 3 = 0
+
||'''x squared minus 7 x plus 3 = 0'''.
  
 
|-
 
|-
 
||05:53
 
||05:53
−
||Let us write two newlines for entering blank lines for better readability.
+
||Let us write two '''newline'''s for entering blank lines for better readability.
  
 
|-
 
|-
 
||06:01
 
||06:01
−
||Press Enter  and type ‘Quadratic Formula: ‘.Press Enter
+
||Press '''Enter''' and type: "Quadratic Formula:". Press '''Enter'''.
  
 
|-
 
|-
 
||06:07
 
||06:07
−
||It is always a good practice to break down a complex formula by starting with the inner most elements of the formula first
+
||It is always a good practice to break down a complex formula by starting with the inner most elements of the formula, first.
  
 
|-
 
|-
Line 209: Line 209:
 
|-
 
|-
 
||06:21
 
||06:21
−
||So we will first write the inner most square root function  
+
||So, we will first write the inner most square root function.
  
 
|-
 
|-
 
||06:27
 
||06:27
−
||And the mark up is ‘square root of b squared - 4ac’ in curly brackets.
+
||And the '''mark up''' is '''square root of b squared - 4ac''' in curly brackets.
  
 
|-
 
|-
 
||06:37
 
||06:37
−
||Next, we will add the ‘minus b plus or minus’ to the above expression and put them inside curly brackets.
+
||Next, we will add the '''minus b plus or minus''' to the above expression and put them inside curly brackets.
  
 
|-
 
|-
Line 225: Line 225:
 
|-
 
|-
 
||06:57
 
||06:57
−
||And Add ‘over 2a’ to the expression.
+
||and add ‘over 2a’ to the expression.
  
 
|-
 
|-
 
||07:02
 
||07:02
−
||And finally add ‘x equals’ to the beginning.
+
||And, finally add '''x equals''' to the beginning
  
 
|-
 
|-
 
||07:08
 
||07:08
−
||With two long gaps surrounding the ‘equal to’ symbol.
+
||with two long '''gap'''s surrounding the '''equal to''' symbol.
  
 
|-
 
|-
 
||07:13
 
||07:13
−
||And there is the quadratic formula.  
+
||And, there is the quadratic formula.  
  
 
|-
 
|-
Line 245: Line 245:
 
|-
 
|-
 
||07:22
 
||07:22
−
||Next let us type the rest of the text as follows in the Formula Editor window:
+
||Next, let us type the rest of the text as follows in the '''Formula Editor''' window
  
 
|-
 
|-
 
||07:29
 
||07:29
−
||‘Where ‘a’ is the coefficient of the x squared term, b is the coefficient of the x term, c is the constant.’ followed by a newline.
+
||Where ‘a’ is the coefficient of the 'x' squared term, 'b' is the coefficient of the 'x' term, 'c' is the constant followed by a '''newline'''.
  
 
|-
 
|-
 
||07:43
 
||07:43
−
||And type: ‘We can solve the equation by substituting 1 for a, -7 for b, 3 for c’ followed by two newlines.
+
||And type: "We can solve the equation by substituting 1 for a, -7 for b, 3 for c’ followed by two '''newline'''s.
  
 
|-
 
|-
 
||07:59
 
||07:59
−
||So the mark up after the substitution, is as shown on the screen:
+
||So, the '''mark up''' after the substitution is as shown on the screen.
  
 
|-
 
|-
 
||08:05
 
||08:05
−
||So we have substituted the numbers using parentheses in the equation.
+
||So, we have substituted the numbers using parentheses in the equation.
  
 
|-
 
|-
Line 269: Line 269:
 
|-
 
|-
 
||08:15
 
||08:15
−
||Complete the remaining steps for solving the  quadratic equation
+
||Complete the remaining steps for solving the  quadratic equation.
  
 
|-
 
|-
Line 277: Line 277:
 
|-
 
|-
 
||08:23
 
||08:23
−
||Format the steps by changing alignments and spacing.
+
||'''Format''' the steps by changing '''alignment'''s and '''spacing'''.
  
 
|-
 
|-
 
||08:28
 
||08:28
−
||Add long gaps and newlines wherever necessary.
+
||Add long '''gap'''s and '''newline'''s wherever necessary.
  
 
|-
 
|-
 
||08:33
 
||08:33
−
||Write the following formula:  'pi is similar or equal to 3.14159’
+
||Write the following formula:  pi is similar or equal to 3.14159.
  
 
|-
 
|-
 
||08:43
 
||08:43
−
||This brings us to the end of this tutorial on Greek Characters, Brackets and Equations in LibreOffice Math.
+
||This brings us to the end of this tutorial on '''Greek Characters, Brackets and Equations''' in '''LibreOffice Math'''.
  
 
|-
 
|-
Line 297: Line 297:
 
|-
 
|-
 
||08:56
 
||08:56
−
||Using Greek characters like alpha, beta, theta and pi
+
||Using '''Greek''' characters like '''alpha, beta, theta''' and '''pi'''.
  
 
|-
 
|-
 
||09:01
 
||09:01
−
||Using Brackets Writing Steps to solve a Quadratic Equation.
+
||Using '''Brackets''' * Writing steps to solve a Quadratic Equation.
  
 
|-
 
|-
 
||09:07
 
||09:07
−
||Spoken Tutorial Project is a part of the Talk to a Teacher project,  
+
||'''Spoken Tutorial''' project is a part of the '''Talk to a Teacher''' project,  
  
 
|-
 
|-
Line 313: Line 313:
 
|-
 
|-
 
||09:19
 
||09:19
−
||This project is co-ordinated by http://spoken-tutorial.org.  
+
||This project is coordinated by http://spoken-tutorial.org.  
  
 
|-
 
|-
Line 321: Line 321:
 
|-
 
|-
 
||09:29
 
||09:29
−
||This tutorial has been contributed by ...............................(Name of the translator and narrator)
+
||This script has been contributed by Priya Suresh, DesiCrew Solutions. And this is Soundharya, DesiCrew Solutions, signing off.   
−
 
+
Thanks for joining.
−
And this is -----------------------(name of the recorder) from --------------------------(name of the place)signing off. Thanks for watching.   
+
−
 
+
−
Thanks for joining
+

Latest revision as of 10:18, 24 March 2017

Time Narration
00:00 Welcome to the Spoken tutorial on LibreOffice Math.
00:04 In this tutorial, we will cover the following topics:
00:08 Using Greek characters like alpha, beta, theta and pi.
00:15 Using Brackets. * Writing steps to solve a quadratic equation.
00:21 Let us learn how to write Greek characters using Math.
00:26 For this, let us first open the example Writer document that we created in the last tutorial i.e. "MathExample1.odt".
00:41 Double-click on the Gray-box that has the formulae we wrote.
00:47 This brings up the Math Formula Editor and the Elements window.
00:54 Let us click on the Formula Editor border and drag and drop to the right to make it float.
01:02 This maximizes the Writer window for better visibility.
01:07 Now, Greek characters- for example: alpha, beta, theta and pi are common in mathematical formulae.
01:16 But, we won’t find these characters in the Elements window.
01:21 We can write them directly by using the percentage sign followed by the name of the character in English.
01:30 For example- to write pi, we simply type "%pi" in the Formula Editor.
01:40 To write a lowercase character, type the name of the character in lowercase.
01:47 For example- to write alpha in lower case, type "%alpha" or "%beta".
01:59 To write an uppercase character, type the name of the character in uppercase.
02:06 For example- to write gamma in upper case, type "%GAMMA" or "%THETA".
02:17 Another way to enter Greek characters is by using the Catalog from the Tools menu.
02:26 Under the Symbol set, select Greek
02:31 and double-click on a Greek letter from the list.
02:35 Notice the mark up for the Greek letter as alpha which is displayed below the list.
02:43 So, this is how we can introduce Greek characters in a formula.
02:49 Explore the Symbols Catalog to know the mark up for other Greek characters.
02:56 Let us now learn how to use Brackets in our formulae.
03:02 'Math' does not know about order of operation in a formula.
03:07 So, we have to use brackets to state the order of operation.
03:13 For example, how do we write: First add x and y, then divide 5 by the result?
03:22 We can type: "5 over x + y".
03:28 Now, is this really what we wanted to write?
03:32 No. We want to add x and y first and we can do this by introducing curly brackets around x and y.
03:44 And the mark up looks like: 5 over x+y in curly brackets.
03:52 So, using brackets can help set the order of operation in a formula.
03:58 Let us save our work by using the File menu at the top and choosing Save.
04:08 Let us now write the steps to solve a quadratic equation.
04:13 We will go to new page in the Writer document by pressing Control + Enter.
04:21 Let us type: "Solving a Quadratic Equation"
04:25 and call Math from the Insert > Object > Formula menu.
04:33 I have already typed the quadratic equations. I will cut and paste them so as to save time.
04:42 So, here is the quadratic equation we will solve: x squared - 7 x + 3 = 0
04:53 To solve it, we can use the quadratic formula shown on the screen.
04:59 Here, ‘a’ is the coefficient of the 'x' squared term, ‘b’ is the coefficient of the 'x' term and ‘c’ is the constant.
05:11 And we can solve the equation by substituting 1 for a, -7 for b, and 3 for c, in the formula.
05:23 So, first let us write the mark up for the quadratic equation that we want to solve.
05:30 First, we will call Math from the Insert > Object > Formula menu.
05:39 In the Format Editor window, let us type the mark up as follows:
05:46 x squared minus 7 x plus 3 = 0.
05:53 Let us write two newlines for entering blank lines for better readability.
06:01 Press Enter and type: "Quadratic Formula:". Press Enter.
06:07 It is always a good practice to break down a complex formula by starting with the inner most elements of the formula, first.
06:16 And then we can work our way around these elements.
06:21 So, we will first write the inner most square root function.
06:27 And the mark up is square root of b squared - 4ac in curly brackets.
06:37 Next, we will add the minus b plus or minus to the above expression and put them inside curly brackets.
06:48 We will make the above expression a numerator by adding another set of curly brackets
06:57 and add ‘over 2a’ to the expression.
07:02 And, finally add x equals to the beginning
07:08 with two long gaps surrounding the equal to symbol.
07:13 And, there is the quadratic formula.
07:16 This is how we can break down complex formulae and build them part by part.
07:22 Next, let us type the rest of the text as follows in the Formula Editor window
07:29 Where ‘a’ is the coefficient of the 'x' squared term, 'b' is the coefficient of the 'x' term, 'c' is the constant followed by a newline.
07:43 And type: "We can solve the equation by substituting 1 for a, -7 for b, 3 for c’ followed by two newlines.
07:59 So, the mark up after the substitution is as shown on the screen.
08:05 So, we have substituted the numbers using parentheses in the equation.
08:12 Okay, here is an assignment for you:
08:15 Complete the remaining steps for solving the quadratic equation.
08:20 Display the two results separately.
08:23 Format the steps by changing alignments and spacing.
08:28 Add long gaps and newlines wherever necessary.
08:33 Write the following formula: pi is similar or equal to 3.14159.
08:43 This brings us to the end of this tutorial on Greek Characters, Brackets and Equations in LibreOffice Math.
08:52 To summarize, we learned the following topics:
08:56 Using Greek characters like alpha, beta, theta and pi.
09:01 Using Brackets * Writing steps to solve a Quadratic Equation.
09:07 Spoken Tutorial project is a part of the Talk to a Teacher project,
09:12 supported by the National Mission on Education through ICT, MHRD, Government of India.
09:19 This project is coordinated by http://spoken-tutorial.org.
09:24 More information on the same is available at the following link.
09:29 This script has been contributed by Priya Suresh, DesiCrew Solutions. And this is Soundharya, DesiCrew Solutions, signing off.

Thanks for joining.

Contributors and Content Editors

Minal, PoojaMoolya, Pratik kamble, Sandhya.np14

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