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If bar(a) and bar(b) are vectors such th...

If `bar(a)` and `bar(b)` are vectors such that `|bar(a)+bar(b)|=sqrt(29)` and `bar(a)times(2bar(i)+3bar(j)+4bar(k))=(2bar(i)+3bar(j))times bar(b)`. Possible value of `(bar(a)+bar(b))*(-7bar(i)+2bar(j)+3bar(k))` is

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A point on the line bar(r)=(1-t)(2bar(i)+3bar(j)+4bar(k))+t(3bar(i)-2bar(j)+2bar(k))

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The reciprocal of bar(a) where bar(a)=-bar(i)+bar(j)+bar(k),bar(b)=bar(i)-bar(j)+bar(k),bar(c)=bar(i)+bar(j)+bar(k) is

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