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Graph of functions are given in the fol...

Graph of functions are given in the following figure. Check the functions for absolute extremum.

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(a) Function has no absolute minima nor absolute maxima.
(b) Function has absolute minima but no absolute maxima.
(c) Function has local maxima at x = 0 as `f(0 - h) f(0+h) lt f(0) (=2)`.
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