For problems 1 3 do each of the following.

**(a) **Find
by solving the equation for *y* and differentiating directly.

**(b) **Find
by implicit differentiation.

**(c) **Check
that the derivatives in **(a)** and **(b)** are the same.

For problems 4 9 find by implicit differentiation.

For problems 10 & 11 find the equation of the tangent
line at the given point.

For problems 12 & 13 assume that ,
and and differentiate the given equation with
respect to *t*.

Problem Pane