Question

Let f be the function given by f(x)=√[(x^4)-(16x^2)]
a) Find the domain of f
b) Find f'(x)
c) Find the slope of the line normal to the graph of f at x=5

Answer 1

ok this is the fourth time. what is up with this problem?

Answer 2

that shows creativity of text books ...LOL

Answer 3

domain : R - {-4,0,4}

Answer 4

do you know how I got the domain?

Answer 5

use u substitution to find f'

Answer 6

m=f'= 1/2(√[(x^4)-(16x^2)] )^(-1/2)[4x^3-32x)

Answer 7

mNormal=[1/m]@5