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Question

The angle of intersection of the curves y=x2 and x=y2 at (1, 1) is
[Roorkee 2000; Karnataka CET 2001]

A
tan1(43)
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B
tan1(1)
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C
90o
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D
tan1(34)
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Solution

The correct option is C 90o
x=logpp=exy=ex
dydx=ex and d2ydx2=ex;d2ydx2+dydx=0.

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