1.

Consider the function f:(-oo,oo)to|(-oo,oo) defined by f(x)=(x^(2)-a)/(x^(2)+a),agt0 . Whichof the followingis not true ?

Answer»

MAXIMUM value of f is not attained EVEN thoughf is bounded.
f(x) is increasing on `(0,oo)` and has minimum at x=0
f(x) is DECREASING on `(-oo,0)` and has minimum at x=0.
f(x) is increasing on `(-oo,oo)` and has NEITHER a local maximum nor a local minimum at x=0

Answer :D


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