Substitute and . Then the integral transforms to
Apply the power rule.
Now put the result back in terms of .
The Lagrangian is
It has critical points where the first order derivatives vanish:
From the first two equations we get
Then
At these critical points, we have
(maximum)
(minimum)
I believe the answer is 0.25
49 is a square given by 7x7 as is clear in your equation, 4 is a square given by 4x4 the operator given is - ( minus) you have two squares, and a difference sign a^2 - b^2 = (a-b)(a+b) 7^2 -2^2 = (7-2)(7+2) = (5)(9) = 45 it is the diffeernce of two squares
So, there's total 8 inches and the customer wants to make 4.5 inches long.
Each time he press the reduce button is 12%. He pressed 5 times, so.
12 x 5 = 60%
60% of the 8 = is 4.8 inches
So the conclusion is that his boss is wrong.