दीर्घवृत्त 3x2 + y2 = 12 के नाभिलंब की लम्बाई क्या है?

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Option 4 :
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संकल्पना:

दीर्घवृत्त  के नाभिलंब की लम्बाई  के बराबर है (a < b)। 

गणना:

दीर्घवृत्त के समीकरण को मानक रूप  में लिखने पर हमें निम्न प्राप्त होता है:

∴ a = 2 और b = 2√3

यहाँ a < b

नाभिलंब की लम्बाई =  =  = 

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