Question

sinx的三次方乘cosx的五次方的不定积分

Answer 1

关键是先进行化简。
sin³xcos³x
=(1/8)(2sinxcosx)³
=(1/8)sin³(2x)
=(1/8)[sin²(2x)]sin(2x)
=(1/8)[(1-cos(4x))/2]sin(2x)
=(1/16)[1-cos(4x)]sin(2x)
=(1/16)[sin(2...