`G(y) = (y - 1)^4 / (y^2 + 2y)^5` Find the derivative of the function.

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gsarora17 eNotes educator| Certified Educator


Derivative can be found either by product rule or quotient rule.

`G(y)=(y-1)^4 (y^2+2y)^-5`

Using product rule

`G'(y)=(y-1)^4 d/(dy) (y^2+2y)^-5 + (y^2+2y)^-5 d/(dy) (y-1)^4`

`G'(y)=(y-1)^4 (-5(y^2+2y)^-6 (2y+2)) +(y^2+2y)^-5 (4(y-1)^3)`

`G'(y)=(-5(2y+2)(y-1)^4)/(y^2+2y)^6 + (4(y-1)^3)/(y^2+2y)^5`

`G'(y)=(-5(2y+2)(y-1)^4 + 4(y-1)^3(y^2+2y))/(y^2+2y)^6`

`G'(y)=((y-1)^3(-5(2y+2)(y-1) + 4y^2+8y))/(y^2+2y)^6`




hkj1385 eNotes educator| Certified Educator

Note:- 1) If y = x^n ; then dy/dx = n*{x^(n-1)}

2) If a function to be differentiated contains sub-functions,then by the rule of differentiation, the last function is differentiated first.

3) If the function is of the form y = u/v ; where u & v are both functions of 'x' , then dy/dx = y' = [{v*u' - u*v'}/(v^2)]

Now, for the given question , find the solution in the attachment

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