If `f(x) = x^(3) + bx^(2) + cx +d` and `0lt b^(2) lt c`.then in `(-infty, infty)`

If f(x) = x^(3) + bx^(2) + cx + d and 0 lt b^(2) lt c , then in (-oo, oo) , a)f(x) is a strictly increasing function b)f(x) has local maxima c)f(x) is a strictly decreasing function d)f(x) is bounded

Let f(x)=x^(3) + bx^(2) +cx +d, 0 lt b^(2) lt c . Then f(x)-

If f(x)=x^(3)+bx^(2)+cx+d and 0 lt b^(2) lt c , then in (-oo, oo), f(x) :

If f(x)=x^3+bx^3+cx+d and 0 lt b^2 lt c "then in" (-oo,oo)

If f(x)=x^3+bx^2+cx+d and 0< b^2 < c , then

If f(x)=x^3+bx^2+cx+d and 0< b^2 < c , then

The function f(x) = x^(3) - 6x^(2) +9x + 3 is decreasing for: a) (-infty,-1)cup(3,infty) b) (1,3) c) (3,infty) d) (1,4)