The Maxima on-line user's manual

Algebra Calculator

Trigreduce

Function: trigreduce (<expr>, <x>)

Function: trigreduce (<expr>) Combines products and powers of trigonometric and hyperbolic sins and coss of <x> into those of multiples of <x>. It also tries to eliminate these functions when they occur in denominators. If <x> is omitted then all variables in <expr> are used.

See also `poissimp`.

```          (%i1) trigreduce(-sin(x)^2+3*cos(x)^2+x);
cos(2 x)      cos(2 x)   1        1
(%o1)          -------- + 3 (-------- + -) + x - -
2             2       2        2```

```(%o1)                                true
(%i2) ```

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