Math

QuestionFor the function g(x)=x3+48xg(x)=-x^{3}+48 x, check if it's even, odd, or neither, and find the local maximum value given a local minimum of -128 at -4.

Studdy Solution

STEP 1

Assumptions1. The function is g(x)=x3+48xg(x)=-x^{3}+48x . A function is even if g(x)=g(x)g(-x)=g(x) for all xx in the domain of gg
3. A function is odd if g(x)=g(x)g(-x)=-g(x) for all xx in the domain of gg
4. A local maximum value is the highest point in a certain interval of a function.

STEP 2

First, we need to determine if the function is even, odd, or neither. Let's start by finding g(x)g(-x).
g(x)=(x)+48(x)g(-x) = -(-x)^{} +48(-x)

STEP 3

implify the expression.
g(x)=x348xg(-x) = -x^{3} -48x

STEP 4

Now, we compare g(x)g(-x) with g(x)g(x) and g(x)-g(x) to determine if the function is even, odd, or neither.
g(x)=x3+48xg(x) = -x^{3} +48xg(x)=x348x-g(x) = x^{3} -48x

STEP 5

By comparing, we can see that g(x)g(-x) is not equal to g(x)g(x) and g(x)g(-x) is not equal to g(x)-g(x). Therefore, the function is neither even nor odd.

STEP 6

Now, we need to find the local maximum value of the function. We know that the local minimum value of the function is -128 at x = -4. The local maximum value will occur at the x-value that is the opposite of the x-value at the local minimum. So, the x-value at the local maximum is4.

STEP 7

Substitute x =4 into the function to find the local maximum value.
g(4)=(4)3+48(4)g(4) = -(4)^{3} +48(4)

STEP 8

implify the expression to find the local maximum value.
g(4)=64+192=128g(4) = -64 +192 =128So, the local maximum value of the function is128.

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