# Implicit Differentiation

• November 29th 2006, 03:32 PM
Yogi_Bear_79
Implicit Differentiation
Use implicit differentiation to find an equation of the line tangent to the curve $x^3 + 2xy +y^3 = 13$ at the point (1, 2).
• November 29th 2006, 03:54 PM
Plato
$\begin{array}{l}
x^3 + 2xy + y^3 = 13 \\
3x^2 + \left[ {2y + 2xy'} \right] + 3y^2 y' = 0 \\
\end{array}$