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Grade 12th passDifferential Calculus

I m not able to find the method they have used .plz help me in solving the question

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Profile image of Akshath G
7 Years agoGrade 12th pass
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1 Answer

Profile image of Arun
7 Years ago
they have written only sqrt (x) = x1/2
 
All thing is correct here.
 
Hope it helps
 
Regards
Arun (askIITians forum expert)