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Show that none of the following funct...

Show that none of the following functions has a local maximum or a local minimum: `logx` (ii) `cosx ,\ \ 0ltxltpi`

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Verified by Experts

`f(x)=log x`

`f^{prime}(x)=frac{1}{x}>0`

Local Max on Min does not exist

`quad f(x)=cos x quad 0 < x < pi`

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