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

## Answer This Question

## Related Questions

- ap calculus ab - for f(x)=lnx we know that f(e)=1. Use the tangent line at(e,1) ...
- AP CALC. AB - 1. Let f be the function given by f(x)=x^2+4x-8. The tangent line ...
- Calculus - The function g is defined for x>0 with g(1)=2, g'(x)=sin(x+1/x), ...
- Calculus - Use linear approximation, i.e. the tangent line, to approximate 8.4^(...
- Calculus - Use linear approximation, i.e. the tangent line, to approximate 8.4...
- Calculus - Functions? - #1. A cubic polynomial function f is defined by f(x) = ...
- Calculus - 1. Given the function f defined by f(x) = x^3-x^2-4X+4 a. Find the ...
- Calculus - Use linear approximation, i.e. the tangent line, to approximate \sqrt...
- calculus - Let f be a differentiable function such that f(3) = 2 and f'(3) = 5. ...
- Calculus - 1. a) For the Function and point below , Find f’(a). b) Determine ...

More Related Questions