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y=(1-x) 2 /x 2 then dy/dx is a)2/x 2 +2/x 3 b)-2/x 2 +2/x 3 c)-2/x 2 -2/x 3 d)-2/x 3 +2/x 2 the correct option is d but how? please solve

y=(1-x)2/x2 then dy/dx is
a)2/x2+2/x3
b)-2/x2+2/x3
c)-2/x2-2/x3
d)-2/x3+2/x2  
the correct option is d but how? please solve

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
2 years ago
Dear student

Y= (1/x^2) -(2/x)+1
Dy/dx= (-2x^-3)+(2x^-2)

Option D

Regards

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