cos5x的精選

∫(cosx)^5dx=sinx-(2/3)(sinx)^3+(1/5)(sinx)^5+C。（C為積分常數）解答過程如下：∫(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分部積分：(uv)&...