# Math Help - Implicit differentiation

1. ## Implicit differentiation

Given x^2 + y^2 = e^xy Tangent lines.

find y' at point (1,0), then find the equations of line tangent to y at (1, 0)

thx

2. Originally Posted by fymp
Given x^2 + y^2 = e^xy Tangent lines.

find y' at point (1,0), then find the equations of line tangent to y at (1, 0)

$2x+2yy'=e^{xy}(y+xy')$
Just solve for $y'$ and evaluate the derivative at the point you were given by substituting the values of x and y. From this point, you should be able to find the tangent line.