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I have this question for a college assignment. It involves 3 'unknowns' (not 3 variables, since 2 are constants). The main difficulty I am having is inexperience with max and min problems where you cannot fully evalaute the solution.

I think I have made a reasonable attempt at a solution, I would appreciate it if someone would take a brief look tell me what you think.

Thanks!

1. The problem statement, all variables and given/known data

Find V for maximum E, hence find E_max.

u and [tex]\theta[/tex] are constants.

2. Relevant equations

Product rule: [tex]\frac{dy}{dx}=u\frac{dv}{dx}+v\frac{du}{dx}[/tex]

3. The attempt at a solution

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# Homework Help: Max and min problem with 3 unknowns

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