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बिन्दुओं `hati-2hatj+hatk` तथा `-2hatj+3hatk` से होकर जाने वाली सरल रेखा का समीकरण सदिश तथा कार्तीय रूप में ज्ञात कीजिए।

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Correct Answer - `vecr=(hati-2hatj+hatk)+lambda(-hati+2hatk),(z-4)/(2)`
`vecr=veca+lambda(vecb-veca)`
`rArr vecr=(hati-2hatj+hatk)+lambda(-2hatj-3hatk-jhati+2hatj-hatk)`
`=(hati-2hatj+hatk)+lambda(-hatj-4hatk)`
बिन्दु (1,-2,1) तथा (0,-2,3) से जाने वाली रेखा का समीकरण
`(x-1)/(0-1)=(y+2)/(-2+2)=(z-1)/(3-1)`

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