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TrigExpand

Usage

TrigExpand[expr]展开expr的三角函数。


Notes

TrigExpand 对三角和双曲函数执行运算。
TrigExpand分开出现在三角函数的参数中的和式与整数倍数,然后可能的话,使用三角恒等式展开三角函数为幂的和。
• 参见Mathematica 全书: 1.4.5 and 节 3.3.7.
Further Examples

These use multiple-angle formulas to expand in terms of the smallest possible angles. In the second example there is substantial simplification.

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TrigExpand also handles hyperbolic functions.

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