- #1
DollarBill
- 44
- 0
Homework Statement
Differentiate
f(x) = 6-5x-x2 / x2-1
-------
A) -5-5x / x2-1
B) 5 / (x+1)2
C) -5-5x / (x2-1)2
D) -5 / (x+1)2
E) -5+5x / x2-1
F) None of the above
The Attempt at a Solution
(x2)(-5-2x)-(6-5x-x2)(2x) / (x2-1)2
Simplified to:
5x2-10x+5 / x4-2x2+1
But it's not one of the answer choices. I tried simplifying it even further to:
5(x2-2x) / x4-2x2+1
or
5(x2-2x) / (x2-1)2
But I can't see where else to go with it.