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Questions  

If t1+x2=x and x2+t2=y then at x=2,dydx=

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By Expert Faculty of Sri Chaitanya
a
245
b
101125
c
488125
d
358125

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detailed solution

Correct option is C

 Given t=x1+x2dtdx=1x21+x22;

x2+t2=y
dydx=2x+2tdtdx=2x+2x1+x21x21+x22

x=2dydx=4+45-325=488125

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