यदि वक्र $xy + ax - by = 0$ के बिंदु $(1, 1)$ पर स्पर्शरेखा की ढाल $2$ है,तो $a$ और $b$ के मान क्रमशः क्या हैं?

  • A
    $a = 1, b = 2$
  • B
    $a = 2, b = 1$
  • C
    $a = 3, b = 5$
  • D
    इनमें से कोई नहीं

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यदि $x^{\frac{2}{3}} + y^{\frac{2}{3}} = a^{\frac{2}{3}}$ है,तो $\frac{dy}{dx}$ ज्ञात कीजिए।

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