<p>Hello, people. I desperately need your help here.
How do you guys do these problems?</p>
<li>y=sin t, x=t^2 (take the derivative)</li>
<li>y=sin^2 t, x=t^3 (find d^2/dx^2)</li>
<p>Please gimme idea how to solve these problems, and also don't forget to post answers.