cos^5xsin^2x
=cos^4xsin^2xd(sinx)
=(1-sin²x)²*sin²xd(sinx)
=(1-2sin²x+sin^4x)*sin²xd(sinx)
=(sin²x-2sin^4x+sin^6x)d(sinx)
所以原函数=(sin³x)/3-2(sin^5x)/5+(sin^7x)/7+c
希望对你有所帮助
cos^5xsin^2x
=cos^4xsin^2xd(sinx)
=(1-sin²x)²*sin²xd(sinx)
=(1-2sin²x+sin^4x)*sin²xd(sinx)
=(sin²x-2sin^4x+sin^6x)d(sinx)
所以原函数=(sin³x)/3-2(sin^5x)/5+(sin^7x)/7+c
希望对你有所帮助