d(∫(2,x²))√(1-t²)dt/dX=2x√(1-x^4) ,

问题描述:

d(∫(2,x²))√(1-t²)dt/dX=2x√(1-x^4) ,

∵d(∫(2,x²))√(1-t²)dt/dx=√(1-x^4)*2x=2x√(1-x^4) ∴题目正确