Question

Inflection points of x^4-18x^2+4?

Answer 1

the second derivative is a quadratic, should be easy to find the zeros right?

Answer 2

My work so far 4x^3-18x^2+4 is the first derivative

Answer 3

oops

Answer 4

Wait sorry

Answer 5

the first derivative does not mean the derivative of the first term!!

Answer 6

4x^3-36x, I don't know what i was putting down.

Answer 7

and I didn't mean the first derivative literally.

Answer 8

12x^2-36

Answer 9

i know i was just fooling

Answer 10

being the double derivative.

Answer 11

12(x^2-3)

Answer 12

looking good so far

Answer 13

so you get the zeros right away in your head right?

Answer 14

No...

Answer 15

\[x^2-3=0\\
x^2=3\\
x=\pm\sqrt3\] yes

Answer 16

Oh duh, sorry, it's late.

Answer 17

lol yeah in your head right?
take a break
have a beer
soda
whatever

Answer 18

Gin and tonic would be prime.

Answer 19

mmm gin

Answer 20

The critical points are -3,3, and 0 right? -3 and 0 being the max and 3 being the min?

Answer 21

Wait -3 is a min.