cos5x的精选

∫(cosx)^5dx=sinx-(2/3)(sinx)^3+(1/5)(sinx)^5+C。（C为积分常数）解答过程如下：∫(cosx)^5dx=∫(cosx)^4dsinx=∫[1-(sinx)^2]^2dsinx=∫[1-2(sinx)^2+(sinx)^4]dsinx=sinx-(2/3)(sinx)^3+(1/5)(sinx)^5+C分部积分：(uv)&...