The subtangent at any point of the curve \( x^{m} y^{n}=a^{m+n} \) varies as (a) The ordinate (b...

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The subtangent at any point of the curve \( x^{m} y^{n}=a^{m+n} \) varies as
(a) The ordinate
(b) The abscissa
(c) Subnormal at the point \( (d) \) Subnormal at the point
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