1.

Consider the polynomial f(x)=1+2x+3x^(2)+4x^(3) . Let s be the sum ofall distinet real roots of f(x) and let t=|s| . Thefunction f(x) is

Answer»

Increasing in `(-t,-(1)/(4))` and DECREASING in `(-(1)/(4),t)`
Decreasing in `(-t,-(1)/(4))` and increasing in `(-(1)/(4),t)`
Increasing in `(-t,t)`
Decreasin g in (-t,t)

ANSWER :B


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