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Find the value of n in N such that the ...

Find the value of `n in N` such that the curve `(x/a)^n+(y/b)^n=2` touches the straight line `x/a+y/b=2` at the point `(a , b)dot`

A

2

B

3

C

4

D

any real number

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The correct Answer is:
D
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