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Lerok [7]
3 years ago
8

Please help precalculus

Mathematics
1 answer:
aleksley [76]3 years ago
3 0
The max value can be found by setting the derivative equal to 0 and solving for x, then subbing that value for x back into the original function and solving for y.  f'(x)= \frac{(x^2+3)(0)-2(2x)}{(x^2+3)^2} which simplifies to f'(x)= \frac{-4x}{(x^2+3)^2}.  This derivative is equal to 0 when -4x is equal to 0.  If -4x = 0, then x = 0.  If we find f(0), then f(0)= \frac{2}{(0)^2+3} and y here is 2/3.  So the max value occurs at (0, 2/3).  There you go!
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