Chapter 9, Problem 2RQ

To determine

Whether the given statement “If $x=f\left(t\right)$ and $y=g\left(t\right)$ are twice differentiable, then $\frac{d^{2}y}{d{x}^2}=\frac{\frac{d^{2}y}{d{t}^2}}{\frac{d^2{x}^2}{d{t}^2}}$” is true or false and explain with an example if necessary to prove your answer.