posted by C .
Implicit differentiation of 5x^2-2xy+7^y
1. you want dy/dx
2. You have the equation 5x^2 - 2xy + 7y^2 = 0
10x - 2x dy/dx - 2y + 14y dy/dx = 0
dy/dx( 14y - 2x) = 2y - 10x
dy/dx = (2y-10x)/(14y - 2x) = (y - 5x)/(7y - x)
No, the equation is
Last term has 7 to the y power....
Ouch, nasty term ...
the derivative of 7^y would be
I am sure you can make the necessary changes .
Yes...very nasty! Thanks