Posted by **Beth** on Thursday, December 28, 2006 at 10:25am.

Determine whether this function has a mzximum or minimum value and then find that value:

f(x)=2x^2 + 3x -9

The derivative, f'(x) = 4x +3, is zero when x = -3/4 . That means there is a relative extreme value (either maximum or minimum) there.

The second derivative is f''(x)= 4 everywhere. That means its extreme value at x = -3/4 is a minimum.

## Answer This Question

## Related Questions

- Math Help! - A.) Determine "a" and "k" so both points are on the graph of the ...
- Calculus - Find the extreme value(s) of the function f(x)=1/(1-x^2). I tried, ...
- calculus - For the function f(x)=x^3e^x, determine intervals of increase and ...
- Calc. checking answer - Determine whether or not each of the following functions...
- Algebra2 - Complete parts a – c for each quadratic function: a. Find the y-...
- math - Determine whether the given quadratic function has a minimum value or ...
- Please check my Calculus - 1. Find all points of inflection: f(x)=1/12x^4-2x^2+...
- Calculus - Consider a differentiable function f having domain all positive real ...
- Algebra- Maximum and minimum. - I don't understand how to find the maximum and ...
- algebra - 1. How to find the numbers, if there are any, at which f has a ...

More Related Questions