Calculating Higher-Order Derivatives Practice Test

$f''(x)=-4x^2\sin(x^2)$

$f''(x)=2x\cos(x^2)$

$f''(x)=2\cos(x^2)-4x^2\sin(x^2)$

$f''(x)=2\cos(x^2)+4x^2\sin(x^2)$

$f''(x)=4x\sin(x^2)$