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Show that f(x) = sqrt(e^(x^(2))-1) has ...

Show that `f(x) = sqrt(e^(x^(2))-1) ` has its extremum at `x = 0`. Also mention whether it is a maximum or minimum.

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A DAS GUPTA-Maxima and Minima-EXERCISE
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  3. Show that f(x) = sqrt(e^(x^(2))-1) has its extremum at x = 0. Also me...

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