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June 20th, 2019, 12:34 AM   #1
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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
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June 20th, 2019, 05:38 AM   #2
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Originally Posted by Khoxy View Post
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.
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June 20th, 2019, 06:23 AM   #3
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This is what I have found
-(21x^2 + 15x + 5)/(4x^2 - 5x)^2
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June 20th, 2019, 07:00 AM   #4
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Originally Posted by Khoxy View Post
This is what I have found
-(21x^2 + 15x + 5)/(4x^2 - 5x)^2
check your algebra (combining like terms). should be ...

$\dfrac{-(23x^2+8x-5)}{(4x^2-5x)^2}$
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June 20th, 2019, 07:08 AM   #5
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Let me check. Thanks
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