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f(x)=(x^2+2*x+5)/(x^2-5*x+1)

2007-11-14 04:14:16 · 3 answers · asked by emma 1 in Science & Mathematics Mathematics

3 answers

Use quotient rule:
f '(x) = [(x^2-5*x+1)(2x+2) - (x^2+2*x+5)(2x-5)]/(x^2-5*x+1)^2
Now expand and simplify for final answer

2007-11-14 04:21:52 · answer #1 · answered by ironduke8159 7 · 0 0

D= denominator
N = Nummerator
Use the quotient rule.
[D ( derivative of N) - N ( derivative of D)] all divided by D^2.
[(x^2-5x+1)(2x+2) - (x^2+2x+5)(2x-5)] / (x^2-5x+1)^2
You can simplify it if you want.

2007-11-14 04:25:21 · answer #2 · answered by cidyah 7 · 0 0

(x^2 + 2x +5) / (x^2 - 5x + 1)

dy/dx = [(2x + 2) / (x^2 - 5x + 1)] - [(2x - 5)(x^2 + 2x + 5) /

(x^2 - 5x + 1)]

2007-11-14 05:26:55 · answer #3 · answered by Joe L 5 · 0 0

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