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July 1, 2015

Homework Help: Calculus

Posted by George on Friday, November 7, 2008 at 12:38am.

(a) Find dy/dx given that x^2+y^2-4x+7y=15.

(b) Under what conditions on x and/or y is the tangent line to this curve horizontal? Vertical?

For part A, I simplifid it to
-(2x+4/2y+7)

For part B,I am confused on what to do?

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