Problem 9E

9. Suppose $y=\sqrt{2 x+1}$, where $x$ and $y$ are functions of $t$.

(a) If $d x / d t=3$, find $d y / d t$ when $x=4$

(b) If $d y / d t=5$, find $d x / d t$ when $x=12$.

 

Step-by-Step Solution