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बिन्दु P(2,-1,3) को जाने वाली तथा रेखाओं...

बिन्दु P(2,-1,3) को जाने वाली तथा रेखाओं `vecr=(hati+hatj+hatk)+lambda(2hati-2hatj+hatk)` तथा `vecr=(2hati-hati-3hatk)+mmu(hati+2hatj+2hatk)` के लंबवत रेखा का समीकरण ज्ञात कीजिए ।

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