Find \(f''(x)\) for \(f(x)=x^3\).

Find \(f''(x)\) for \(f(x)=4x^4-2x^2+5\).

Find \(f^{(3)}(x)\) for \(f(x)=x^5\).

If \(s(t)=t^3-6t^2+4t\), find the acceleration \(s''(t)\).

Find \(f''(1)\) for \(f(x)=x^4-3x\).

Find \(f''(x)\) for \(f(x)=\sin x\).

Find \(f^{(4)}(x)\) for \(f(x)=e^x\).

Find \(f''(x)\) for \(f(x)=(x^2+1)^3\).

For \(f(x)=x^4-4x^3\), use \(f''(x)\) to determine where the graph is concave up.

Find a formula for \(f^{(n)}(x)\) when \(f(x)=x^5\) for \(n=1,2,3,4,5\).