求[x^2√(1-x^2)]dx,0
问题描述:
求[x^2√(1-x^2)]dx,0
答
[x^2√(1-x^2)]dx
令x=sint,0
求[x^2√(1-x^2)]dx,0
[x^2√(1-x^2)]dx
令x=sint,0