# Math Help - f'(x) of: f(x)= ax+b/(x-1)(x-4)

1. ## f'(x) of: f(x)= ax+b/(x-1)(x-4)

Hey everyone, this is a grea tool a classmate of mine uses for his Calculus and I was wondering if you guys could help me with this assignment.

I need to know how to take the f'(x) of: f(x)= ax+b/(x-1)(x-4) in a step by step format. I'm having trouble with this.

Thanks

2. Just use the quotient rule.

$\frac{ax+b}{x^{2}-5x+4}$

Quotient rule:

$\frac{(x^{2}-5x+4)(a)-(ax+b)(2x-5)}{(x^{2}-5x+4)^{2}}$

Now simplify

3. Originally Posted by AndrewV
Hey everyone, this is a grea tool a classmate of mine uses for his Calculus ...
Hello, Andrew,

your classmates seem to be faster. Have a look her: http://www.mathhelpforum.com/math-he...ilipsach1.html

EB