1.

Consider the curve x^n+y^n=a^n(a gt 0). Tangent at any arbitrary point P(x_1,y_1)of the curve meets x-axis at A and y-axis at B(x_1y_1 ne 0), then :

Answer»

OA+OB= CONSTANT `implies N=(1)/(2)`(O is origin)
AB= constant `implies n=(2)/(3)`
MID point of AB remain same `AA(x_1,y_1) implies n=1`
slope of `AB= -(x_1)/(y_1) implies n=2`

Answer :A::B::C::D


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