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 June 20th, 2019, 12:34 AM #1 Newbie   Joined: Apr 2019 From: Malawi Posts: 19 Thanks: 0 Math Focus: Trigonometry and calculus Derivatives Differentiate the function below y = (3x^2 + 2x + 1)/(4x^2 - 5x) This question is giving me much headaches as my assignment due date is tomorrow morning. May somebody help please
June 20th, 2019, 05:38 AM   #2
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 Originally Posted by Khoxy Differentiate the function below y = (3x^2 + 2x + 1)/(4x^2 - 5x) This question is giving me much headaches as my assignment due date is tomorrow morning. May somebody help please
start by using the quotient rule for derivatives ... post a follow up with what you can do up to the point of getting stuck.

 June 20th, 2019, 06:23 AM #3 Newbie   Joined: Apr 2019 From: Malawi Posts: 19 Thanks: 0 Math Focus: Trigonometry and calculus This is what I have found -(21x^2 + 15x + 5)/(4x^2 - 5x)^2
June 20th, 2019, 07:00 AM   #4
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Joined: Jul 2011
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Quote:
 Originally Posted by Khoxy This is what I have found -(21x^2 + 15x + 5)/(4x^2 - 5x)^2
check your algebra (combining like terms). should be ...

$\dfrac{-(23x^2+8x-5)}{(4x^2-5x)^2}$

 June 20th, 2019, 07:08 AM #5 Newbie   Joined: Apr 2019 From: Malawi Posts: 19 Thanks: 0 Math Focus: Trigonometry and calculus Let me check. Thanks

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