Questions: Find the absolute maximum and minimum values of the function over the indicated interval, and indicate the (x)-values at which they occur.
[ f(x)=2-6 x-6 x^2 ;[-3,3] ]
The absolute maximum value is at (x=)
(Use a comma to separate answers as needed.)
Transcript text: Find the absolute maximum and minimum values of the function over the indicated interval, and indicate the $x$-values at which they occur.
\[
f(x)=2-6 x-6 x^{2} ;[-3,3]
\]
The absolute maximum value is $\square$ at $x=$ $\square$
(Use a comma to separate answers as needed.)
Solution
Solution Steps
Step 1: Find the derivative of the function
The derivative of the function, \(f'(x)\), is: \( - 12 x - 6 \)
Step 2: Solve \(f'(x) = 0\) for critical points
The critical points are found at: \( \left\{- \frac{1}{2}\right\} \)
Step 3 & 4: Evaluate \(f(x)\) at critical points and endpoints
At \(x = - \frac{1}{2}\), \(f(x) = 3.5\)
At the endpoints, \(f(a) = -34\) and \(f(b) = -70\)
Step 5: Compare all evaluated values to find absolute maximum and minimum
The absolute maximum value is \( 3.5 \) at \(x = - \frac{1}{2}\)
The absolute minimum value is \( -70 \) at \(x = 3\)
Final Answer:
The absolute maximum value of the function over the interval is \( 3.5 \) at \(x = - \frac{1}{2}\),
and the absolute minimum value is \( -70 \) at \(x = 3\).