Posted by **Jane** on Sunday, December 11, 2011 at 7:59pm.

Let f be the function given by f(x)= x^2+4x-8. The tangent line to the graph at x=2 is used to approximate values of f. For what value(s) of x is the tangent line approximation twice that of f?

- calculus -
**Anonymous**, Thursday, December 15, 2011 at 9:10am
2X+4

2(2)+4

4+4

F(2)=8

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