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OpenStudy (anonymous):
Please explain why there is no relative extrema for this function f(x) = 7x/5x-3
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OpenStudy (asnaseer):
at a relative extrema, the differential of f(x) is zero. If you calculate the differential of your function you will note that it can only be zero at \(x=\pm\infty\).
OpenStudy (asnaseer):
it's \(f'(x)\) that I was talking about being zero, not \(f(x)\)
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