CPM Homework Help : CALC3RD Problem 9-23

If $xy + \ln(y) = 2$ , determine the exact value of $\frac { d y } { d x }$ when $y = 1$ .

Hint:

To differentiate $xy$ , use the Product Rule.

Step:

$\frac{d}{dx}xy=\Big(1\frac{dx}{dx}\Big)y+x\Big(1\frac{dy}{dx}\Big)$