Q. 81

Mark (√) against A. minimum at x = 0

B. maximum x = 0

C. neither a maximum nor a minimum at x = 0

D. none f these

Answer :

f(x) = |x|

Now to check the maxima and minima at x =0.

It can be easily seen through the option.

See |x| is x for x>0 and –x for x<0

That is no matter if you put a number greater than zero or number less than zero you will get positive answer.

for x = 0 we will get minima.

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