00:01
Okay, so here you can use your graph in calculator to solve this problem, but here i cannot show you my graphing calculator.
00:11
So here i will try to find the derivative of the function e of v and then find the critical values, okay, then to solve the problem.
00:27
Okay, so the, so first we can, we know that this function can be rewriting as can be rewritten as this, right? so let's find the prime of e of v.
01:11
So we got the denominator square, and then we take the derivative of the first of the numerator times the denominator minus numerator times the derivative of the denominator, which is just one, okay? so we have here actually, okay, what we can factor out is 14 times 2 .73 times v squared.
02:26
And then we have three times v minus 7, so 3 v minus 21 minus minus v, okay, over v minus 7.
02:45
So the numerator will be, let's call, let's use the calculator.
03:09
So 14 times 2 .73 is 38 .22.
03:29
Okay, we don't need to further simplify it...
