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Rishabh Sharma Grade: 10
        

pls help me ,I couldnt solve these


q1: if y=ex+e^x+e^x+...........∞,then dy/dx equals


q2:if x=at2 and y=2at then (xy*d2y/dx2)  is equal to


 


sir as u asked i checked both the ques , both are from the course material and are correct


 the ans for q1 is = y/(1-y) .


 sir in q2 could u pls exp how the chain rule is applied in diff. second time


thank u

6 years ago

Answers : (1)

piyush shukla
24 Points
										

let y=e^x+e^x+...........∞,


then y=ex+y


now diff


  dy/dx=ex+y(1+ dy/dx)


dy/dx(1- ex+y)= ex+y


dy/dx=( ex+y)/( 1- ex+y)


dy/dx=y/(1-y)

6 years ago
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