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नीचे दी गई रेखाओं के बीच न्यूनतम दूरी ...

नीचे दी गई रेखाओं के बीच न्यूनतम दूरी ज्ञात करें :
`vec(r)=(hat(i)+2hat(j)+hat(k))+lambda(hat(i)-hat(j)+hat(k))` तथा `vec(r)=(2hat(i)-hat(j)-hat(k))+mu (2hat(i)+hat(j)+2hat(k))`

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