The sum of the intercepts of a tangent to \( \sqrt{x}+\sqrt{y} \) \...

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The sum of the intercepts of a tangent to \( \sqrt{x}+\sqrt{y} \) \( =\sqrt{a}, a0 \) upon the coordinate axes is
(a) \( 2 a \)
(b) \( a \)
(c) \( a / 2 \)
(d) \( \sqrt{a} \)
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