1.If f(x)=x3+bx2+cx+df(x) = x^3 + bx^2 + cx + df(x)=x3+bx2+cx+d and 0<b2<c0 < b^2 < c0<b2<c, then in (−∞,∞)(-\infty, \infty)(−∞,∞)a.f(x)f(x)f(x) has a local maximab.f(x)f(x)f(x) is strictly increasing functionc.f(x)f(x)f(x) is boundedd.f(x)f(x)f(x) is strictly decreasing functionLogin to continueOnly logged in users canattempt or see the solution.
