→ coolbaby119:我也想知道~邦推麻煩高手了 134.208.34.188 06/11 08:22
Let L be any tangent line to the curve
√x + √y = √c (in the first quadrant).
Show that the sum of the x- and y- intercepts of L is c.
有高手知道這該怎麼證嗎!?
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