February 21, 2017

Homework Help: calculus

Posted by Kim on Friday, November 6, 2009 at 12:10am.

Alright so implicit differentiation is just not working out for me.

Use implicit differentiation to find the slope of the tangent line to the curve at point (4,1).

y / (x-2y) = x^3 + 4

Tried quotient rule to get the derivative of the left side, then got derivative of right side, and ultimately I got y + 3x^2 (x-2y)^2 / x-2y-2y

This is clearly not correct since the bottom would turn into zero if I plugged in x and y. Sigh...

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