Question

f(x)=x^4-50x^2+4

Answer 1

Let x^2=a

Answer 2

Take \(k =x^2\). You have the quadratic \(k^2 - 50k + 4 = 0\)

Answer 3

i need to find the inflection points.

Answer 4

Ah.

Answer 5

Find the second derivative first. Then equate to zero.

Answer 6

I got\[5/\sqrt{3}\] and -\[5/\sqrt{3}\]

Answer 7

Right.

Answer 8

I also graphed the equation but no matter how i put the answer in it keeps say its wrong

Answer 9

it wants and x and y value

Answer 10

there are two inflection points.

Answer 11

the x-values are
5/sqrt(3)
-5/sqrt(3)

plug in both of them in the original function to get the y-values.

Answer 12

i got -343.22 for both answers. is that correct?

Answer 13

seems good.

Answer 14

plugged it in still says wrong. could it be a glich in the system?