Question
Download Solution PDFदीर्घवृत्त 4x2 + 9y2 = 1 की नाभियाँ Q और R पर हैं। यदि P(x, y) दीर्घवृत्त पर कोई बिंदु है, तो PQ + PR किसके बराबर है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFव्याख्या:
दिया गया है:
4x2 + 9y2 = 1
यहाँ a = 1/2 और b = 1/3
अब
e =
नाभियाँ = (±ae, 0)
= ( ±
= (±
इस प्रकार, P(x, y) दीर्घवृत्त पर कोई बिंदु है
⇒ PQ + PR = 2a = 2 x 1/2 = 1
∴ विकल्प (b) सही है।
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