Difference between revisions of "LibreOffice-Suite-Math/C3/Set-Operations-Factorials-Cross-reference-equations/English-timed"

|Set A with 5 elements

|Set B  

|Set C  

|And Set D, with elements each.

|And we can also write: set C is a subset of set A, as every element in C is in set A.

|The mark up for this is C subset A.

|You can learn to write more set operations, by exploring the Elements window by clicking on the third icon there.  

|Go to View> Elements> Set Operations.

|Let us save our work now.  

|Click on File>Save.

|Now let us write Factorial functions.  

|These will help to cross reference them anywhere within the Writer document.

|Let us go to a new page by clicking three times slowly outside the Writer gray box.

|Press Control  -Enter.

|Type “Factorial Function: ” and press enter twice.

|Now, we know how to call Math.

|But there is another way to bring up the Math object into the Writer.

|For this simply write ‘f n’ on the Writer document and press F3.

|We are now seeing a new Math object that says E is equal to m c squared;

|For now, let us double click on the Math object  

|And do the formatting. Font size 18 and Left Alignment.

|Okay, let us now write an example for Factorial.  

|The mark up ‘fact’ represents the factorial symbol.

|So let us overwrite the existing formula with ours:  

|5 Factorial = 5 into 4 into 3 into 2 into 1 = 120.

|Notice the mark up here.

|Let us write our next formula in a new Math object here.

|For this, let us first click outside this Writer gray box three times slowly.

|Press the down arrow key two or three times to go to the end of this page.

|And type ‘f n’ and press F3 to bring up the second Math object.

|N factorial is equal to prod from k = 1 to n of k.

|Notice the mark up ‘prod’ which denotes product, similar to sigma for summation.

|Notice the mark up ‘binom’, which displays a vertical stack of two elements and helps with better alignment.

|and type: An example of factorial is provided here:

|Now let us click on the Insert menu, and on Cross reference.  

|In the new popup, let us select “Text” in the Type list.

|Now choose Reference in the ‘Insert reference tool’ list and click on Insert once and close.

|So the number one in parentheses has appeared next to our text. And we are done.

|Let us test it by simply clicking on this number;

|And notice that the cursor has jumped to the location where we wrote the first formula.

|So this is how we can cross reference Math formulae anywhere within the Writer document.

|Let us save our work.

|Download guides at libreoffice.org documentation link.

|You can also visit the following website   for more information on Math

|Using the example Sets in this tutorial: check if A union ( B union C) is equal to (A union B) union C

|Write the results of A minus B

|And cross reference, the second and third factorial formulae in the Writer document

|This brings us to the end of this tutorial on Sets, Factorials and Cross Referencing in LibreOffice Math.

|Write Set operations

|Write Factorials and  

|Cross reference equations by numbering

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