# Maths

Find the maximum or minimum value of function and the value of x when it occurs: -2x^2+5x+5.

1. 👍 0
2. 👎 0
3. 👁 175
1. done earlier, and you were correct.

1. 👍 0
2. 👎 0
posted by Steve
2. but that wasn't the correct answer

1. 👍 0
2. 👎 0
posted by Han
3. The max occurs when x = -b/2a = 5/4, and is indeed 65/8

wolframalpha.com confirms this:

http://www.wolframalpha.com/input/?i=-2x^2%2B5x%2B5

1. 👍 0
2. 👎 0
posted by Steve

## Similar Questions

1. ### algebra(reiny)

Hey thanks for all your help but you kinda confused me on a few: 1)Determine whether f(x)=-5x^2-10x+6 has a maximum or minimum value and find that value A.minimum -1 B.maximum 11 C.maximum -1 D.minimum 11 and you said the function

asked by Marissa on August 16, 2007
2. ### math

Answer the following questions for the function f(x)=sin^2(x/5) defined on the interval .(-15.507923,3.82699075) Rememer that you can enter "pi" for as part of your answer. a.what is f(x) concave down on the region B. A global

asked by li on November 5, 2011
3. ### Calculus

f(x) = sin^2(x/2) defined on the interval [ -5.683185, 1.270796]. Remember that you can enter pi for \pi as part of your answer. a.) f(x) is concave down on the interval . b.) A global minimum for this function occurs at . c.) A

asked by Anonymous on November 1, 2011
4. ### Calculus

Answer the following questions for the function f(x) = sin^2(x/3) defined on the interval [ -9.424778, 2.356194]. Rememer that you can enter pi for \pi as part of your answer. a.) f(x) is concave down on the interval . b.) A

asked by Anonymous on November 2, 2011
5. ### calculus

there are no examples of this type of problem in my book so if you could help walk me through it - that would be extremely helpful. thanks ahead of time. Find the extreme values of the function on the interval and where they

asked by K.T. on December 15, 2014
1. ### Math

Find the maximum or minimum value of function and the value of x when it occurs: -2x^2+5x+5.

asked by Han on June 9, 2014
2. ### math

Answer the following questions for the function f(x)=x(sqrtx2+25) defined on the interval [–5,4]. A. f(x) is concave down on the region to B. f(x) is concave up on the region to C. The inflection point for this function is at D.

asked by kitor on May 29, 2013
3. ### Math: Calculus

Answer the following questions for the function f(x)=sin(x/4)^2 defined on the interval [-12.266371, 2.241593]. Rememer that you can enter pi for as part of your answer. a.)f(x) is concave down on the interval ____. b.) A global

asked by NEED HELP!!!! on November 3, 2010
4. ### calculus

Find the absolute extrema of the function (if any exist) on each interval. (If an answer does not exist, enter DNE.) f(x) = square root of (25 − x^2) (a) [−5, 5] minimum (x, y) = (smaller x-value) (x, y) = (larger x-value)

asked by Sagar on April 5, 2016
5. ### trigonometry

An object is attached by a string to the end of a spring. When the weight is released it starts oscillating vertically in a periodic way that can be modeled by a trigonometric function. The object's average height is −20 cm

asked by obet on July 31, 2014

More Similar Questions