If you have an equation like 2x==0, it is perfectly clear that the only possible solution is x->0. However, if you have an equation like ax==0, things are not so clear. If a ...

ExpandAll[expr] expands out all products and integer powers in any part of expr. ExpandAll[expr, patt] avoids expanding parts of expr that do not contain terms matching the ...

Undefined is a symbol that represents a quantity with no defined value.

Transparency is useful in plots when you need an unobstructed view of multiple components of one plot, or simply want to lighten a single plot component against a white ...

Apart[expr] rewrites a rational expression as a sum of terms with minimal denominators. Apart[expr, var] treats all variables other than var as constants.

ApartSquareFree[expr] rewrites a rational expression as a sum of terms whose denominators are powers of square-free polynomials. ApartSquareFree[expr, var] treats all ...

Cancel[expr] cancels out common factors in the numerator and denominator of expr.

ExpandDenominator[expr] expands out products and powers that appear as denominators in expr.

TrigFactor[expr] factors trigonometric functions in expr.

Introduction Linear Optimization Numerical Nonlinear Local Optimization