1-cosx的5/2次方的积分

问题描述:

1-cosx的5/2次方的积分

∫(1-cosx)^(5/2) dx =∫[2sin(x/2)^2]^(5/2) dx=2*2^(5/2)∫[sin(x/2)]^5d(x/2)---------∫(sint)^5dt =- ∫(sint)^4dcost =- ∫[1-(cost)^2]^2dcost=- ∫[1-2(cost)^2+(cost)^4]dcost=-sint+2/3(cost)^3-1/5 (cost...