Question

What is the relative maximum and minimum of the function?

f(x) = 2x3 + x2 - 11

A. The relative maximum is at (–1.53, 8.3) and the relative minimum is at (1.2, –12.01).

B. The relative maximum is at (–1.53, 12.01) and the relative minimum is at (1.2, –8.3).

C. The relative maximum is at (–1.2, 8.3) and the relative minimum is at (1.53, –12.01).

D. The relative maximum is at (–1.2, 12.01) and the relative minimum is at (1.53, –8.3).

Answer 1

C is wrong.

Answer 2

Hmm none of these options are correct, are you sure you pasted it correctly?

Check out this graph of the function.
You can work out the derivative to verify, but you can clearly see that the minimum is at (0,-11).

Answer 3

https://www.desmos.com/calculator/dwnchvk3jh

Answer 4

These answers were on my exam, I copied them right.

Answer 5

Hmm that's strange :\

Answer 6

Thanks for trying.