Some Examples of Formulas

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When you insert a formula into a Writer document, the Selection floating window opens. It allows you to use many templates make writing formulas easier. Sometimes, however, you may need to write more complicated formulas. The table below provides some examples of more complex formulas.
Note: In linear systems, the +, -, = signs have to be placed between quotes. Some other characters are suitable too, as `, %, or two pairs of braces {}, but quotes are the simplest to use.

Commands Formulas
Superposed fractions
 {{1 over 2}+ 5}over {3+{5+1} over {8-5}} 
Image:Superposed_Fractions.png
Linear system
 left lbrace matrix{x#"+"#2 y#"=" # 5 
## 3 x#"-"#5 y#"=" # 2}  right none 
Image:Linear_System.png
Piecewise function
f(x)=left lbrace matrix {0 # "for" #```x` <` 0 
## 1 # "for" # 0`≤`x`<`1 
## x # "for" # ```x`≥`1 }right none 
Image:Piecewise_Function.png
Finite continued fraction
[a_{1},a_{2}, dotslow , a_{n}] = {1 over {a_{1}+ 1 over {a_{2}
+1 over { {dotsaxis + 1 over {a_{n}}}} }}}
Image: Finite_Continued_Fraction.png
Infinite continued fraction
[a_{1},a_{2}, a_{3},dotslow] = {1 over {a_{1}+ 1 over {a_{2}
+1 over {  {a_{3}+{1 over {~ dotsdown}}}}} }}
Image: Infinite_Continued_Fraction.png
Matrix of order (n,m)
M_(n,m)=left( matrix{a_11 # a_12 # dotsaxis #a_{"1m"}
##a_21 # a_22 # dotsaxis # a_{"2m"}
##dotsvert #dotsvert #dotsdown #dotsvert 
##a_{"n1"} # a_{"n2"} # dotsaxis #a_{"nm"}}right)  
Image: (n,m)_Matrix.png


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