xcos^2(x⼀2)dx不定积分

2025-06-27 02:50:23
推荐回答(1个)
回答1:

∫xcos(x^2)dx
=∫cos(x^2)(xdx)
=∫cos(x^2)(d(x^2)/2)
=(1/2)∫cos(x^2)d(x^2)
=(1/2)sin(x^2)+C