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August 3, 2015

Homework Help: Calculus

Posted by Icy on Sunday, April 22, 2007 at 9:28pm.

Find the equation of the tangent line to the graph of f(x)= (8x^2-3)/(x^2+4) at the point where x=-1.

Take the derivative of f(x). That gives you m, the slope.

Then,

y= mx + b

Put in x,f(x) for x,y. Calculate b.

I get it now. Thanks for your help!

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