Posted by **Cleondra** on Sunday, February 19, 2012 at 11:50am.

f(x)=e^x-x

(a) at what x-values does f have relative extrema?

(b) find the exact value of -1 to 1 on an interval f(x)dx.

(c) show that f does not have any inflection points.

- calculus -
**Reiny**, Sunday, February 19, 2012 at 11:58am
f'(x) = e^x - 1

= 0 for extrema of the function

e^x = 1

x = 0

b) ??

c) for points of inflection, f''(x) = 0

f''(x) = e^x

e^x = 0

has no solution.

look at the graph of y = e^x, it never touches the x-axis

## Answer this Question

## Related Questions

- Relative Extrema: AP Calculus - Consider the function f(x)= (3/4)x^4-x^3-3x^2+6x...
- calculus - find the relative extrema and points of inflection, if possible, of y...
- calculus - Find all relative extrema and points of inflection of the function: f...
- calculus - Find any relative extrema and any points of inflection if they exist ...
- Calculus A - Find all relative extrema and points of inflection for the ...
- Calculus - Given the function: f(x) = x^2 + 1 / x^2 - 9 a)find y and x ...
- Calculus - Given the function: f(x) = x^2 + 1 / x^2 - 9 a)find y and x ...
- math - Given the function f(x)=x^4−6x^2 a.) Find all values of x where ...
- cal - Sketch the graph and show all local extrema and inflection points. f(x)= 1...
- Calculus - Find the x-values of all points where the function below has any ...