Mathematics

Problem

Let the particle’s position be given by

r=\theta^{2}

with

\theta=t^{2}

. What is

\dfrac{dy}{dt}

t=1

? a)

4\cos 1 - 2\sin 1

2\sin 1 + 2\cos 1

4\sin 1 + 2\cos 1

4\sin 1 + \cos 1