Over which interval is the graph of f(x) = one-halfx2 + 5x + 6 increasing?

Using the first derivative test, it is found that the graph is increasing on the interval .

The function is given by:

It's derivative is:

Then, we test the signal of the derivative, which is the first derivative test.

The graph sketched at the end of this answer corroborates the answer found using the first derivative test.

A similar problem is given at link

Step-by-step explanation:

-10i^2-4i

step-by-step explanation:

evaluate for p=2,q=5i

(2−4)(2+5i)i

(2−4)(2+5i)i

=−10i2−4i