find the absolute maximum value and the absolute minimum value, if any, of the function. (if an answer does…

find the absolute maximum value and the absolute minimum value, if any, of the function. (if an answer does not exist, enter dne.) g(x)=-x² + 2x + 7 maximum minimum need help? read it master it
Answer
Explanation:
Step1: Find the derivative
The derivative of $g(x)=-x^{2}+2x + 7$ using the power - rule $(x^n)'=nx^{n - 1}$ is $g'(x)=-2x + 2$.
Step2: Find critical points
Set $g'(x)=0$. So, $-2x + 2 = 0$. Solving for $x$ gives $2x=2$, then $x = 1$.
Step3: Determine the second - derivative
The second - derivative $g''(x)=-2<0$. Since $g''(1)=-2<0$, the function has a maximum at $x = 1$.
Step4: Calculate the maximum value
Substitute $x = 1$ into $g(x)$: $g(1)=-(1)^{2}+2(1)+7=-1 + 2+7=8$.
Step5: Analyze the behavior of the function
Since $g(x)=-x^{2}+2x + 7$ is a quadratic function with $a=-1<0$, the parabola opens downwards. As $x\to\pm\infty$, $g(x)\to-\infty$. So, there is no absolute minimum.
Answer:
maximum: 8 minimum: DNE