Question

Graph the function by first finding the relative extrema. f(x) = x + 4x2 - X-4 O 2 O I need help with this.

Answer 1

The equation is:

$f(x)=x^3+4x^2-x-4$

So to know that, we can find the intercept in the y axis by replacing x=0 so:

$\begin{gathered} y=0^3+4(0)^2-0-4 \\ y=-4 \end{gathered}$

So if you see the functions the only one that intercept the y axis in -4, then the solution is option (D)