Question

y = sqrt(x) / (1-x)
Find the derivative at x = 4

Answer 1

Ah okay I see, you brought the -1/2 exponent to the bottom and they cancelled out. That's very helpful thank you. The only issue, is my book claims the answer is 5/36. Could you help me find where there is an incorrect sign?

Answer 2

let me look...i am known to make mistakes from time to time...

Answer 3

let me try again...