∫xcos（x/2）dx

∫xcos（x/2）dx ∫xcos(1+x^2)dx= 求不定积分∫xcos(x^2)dx ∫ xcos(x/3) dx ... 求不定积分,∫sin^2xcos^2x dx 求不定积分：∫xcos(4x^2 +5)dx ∫xcos（1+x²）dx大神求解 ∫sin²xcos³x dx 计算不定积分∫xcos(x/2)dx 求过程跟答案 ∫(1/sin²xcos²x)dx怎么求, ∫(1/sin³xcos³x)dx 怎么解 d/dx{积分从x^2到0(xcos（t^2）dt)}