y-अक्ष को मूल-बिन्दु पर स्पर्श करने वाले वृत्त-निकाय का अवकल समीकरण है

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NDA (Held On: 21 Apr 2019) Maths Previous Year paper
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गणना:

जैसा कि हम जानते हैं कि मूल पर y- अक्ष को स्पर्श करनेवाले वृत्त का केंद्र x - अक्ष पर होता है।

तो मूल पर y - अक्ष को स्पर्श करनेवाले वृत्त का समीकरण है: (x - a)2 + y2 = a2

⇒ x2 + y2 – 2ax = 0       ---(1)

इसलिए उपरोक्त समीकरण को x के संबंध में अवकलित करके, हम प्राप्त करते हैं

तो, समीकरण (1) में 2a के मूल्य को प्रतिस्थापित करके, हम प्राप्त करते हैं

⇒ x2 + y2 - 

⇒ 

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