If F(x)=∫0x21+t3dtF(x) = \int_0^{x^2} \sqrt{1+t^3} dtF(x)=∫0x21+t3dt, what is the derivative F′(x)F'(x)F′(x) at x=1x=1x=1?
222\sqrt{2}22
2\sqrt{2}2
424\sqrt{2}42
000