Question

Help my last question
What is the relative maximum and minimum of the function?
f(x)= 2x^3 + x^2 – 11x


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

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

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

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

Answer 1

take the derivative, set it equal to zero and solve for \(x\)

Answer 2

take what ?

Answer 3

is this a calculus course, or something else?

Answer 4

its algebra 2

Answer 5

then you can't do it without technology
http://www.wolframalpha.com/input/?i=+2x^3+%2B+x^2+%E2%80%93+11x

Answer 6

look on the bottom where it says "local max" and "local min" then click on "approximate form" to get the decimal

Answer 7

okay so its \[\sqrt{67}/\]

Answer 8

/6

Answer 9

you want a decimal because those are your answer choices
click on the box that says "approximate form" to get it

Answer 10

you should see something like this
max{2 x^3+x^2-11 x}~~12.0078 at x~~-1.53089

Answer 11

okay so its either A or B

Answer 12

has be be B because it says The relative maximum is at (–1.53, 12.01)

Answer 13

oh okay i get it now thank you :)

Answer 14

yw