Find the second derivative of f(t)=et2f(t) = e^{t^2}f(t)=et2.
2et22e^{t^2}2et2
4t2et24t^2e^{t^2}4t2et2
(2+4t2)et2(2 + 4t^2)e^{t^2}(2+4t2)et2
4tet24te^{t^2}4tet2