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Question

Assertion(A): If the tangent at any point P on the curve xy=a2 meets the axes at A and B then AP:PB=1:1
Reason(R): The tangent at P(x,y) on the curve Xm.Yn=am+n meets the axes at A and B. Then the ratio of P divides ¯¯¯¯¯¯¯¯AB is n:m.

A
Both A and R are true R is the correct explanation of A
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B
Both A and R are true but R is not correct explanation of A
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C
A is true but R is false
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D
A is false but R is true
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Solution

The correct option is B Both A and R are true R is the correct explanation of A
y=a2x
y=a2x2
y=a2t2
(ya2t)=a2t2(nt)
B=(2+10)
A=(0, 2a2t)
APBP=1

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