d∫xsintdt/dx =
= d[x∫sintdt]/dx
=∫sintdt + xsinx.
应该是:求曲线 y=x^(1/3) 与 y=x 所围面积 吧!
S=∫[x^(1/3)-x]dx = [(3/4)x^(4/3)-x^2/2] = 1/4.
d∫xsintdt/dx =
= d[x∫sintdt]/dx
=∫sintdt + xsinx.
应该是:求曲线 y=x^(1/3) 与 y=x 所围面积 吧!
S=∫[x^(1/3)-x]dx = [(3/4)x^(4/3)-x^2/2] = 1/4.