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Saurabh Bhatt
Asked: 2022-10-29T01:43:50+05:30 In:

The scalars l and m such that `lveca + m vecb =vecc, ” where ” veca, vecb and vecc` are given vectors, are equal to
A. `l= ((veccxxvecb).(vecaxxvecb))/((vecaxxvecb)^(2))`
B. `l = ((vecc xx veca). (vecb xxveca))/((vecbxxveca))`
C. `m = ((veccxx veca). (vecbxxveca))/((vecb xx veca)^(2))`
D. `m = ((veccxx veca). (vecbxxveca))/((vecb xx veca))`

The scalars l and m such that `lveca + m vecb =vecc, ” where ” veca, vecb and vecc` are given vectors, are equal to
A. `l= ((veccxxvecb).(vecaxxvecb))/((vecaxxvecb)^(2))`
B. `l = ((vecc xx veca). (vecb xxveca))/((vecbxxveca))`
C. `m = ((veccxx veca). (vecbxxveca))/((vecb xx veca)^(2))`
D. `m = ((veccxx veca). (vecbxxveca))/((vecb xx veca))`
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1 Answer

  1. Correct Answer – a,c
    Here, ` (l veca +mvecb) xx vecb =vecc xx vecb `
    `or lveca xx vecb =vcec xx vecb`
    `or l(veca xx vecb)^(2) = (vecc xx vecb) / (veca xx vecb)`
    `or l= ((vecc xx vecb) . (veca xx vecb))/ ((veca xx vecb)^(2))`
    similarly, `m = ((veccxxveca). (vecb xx veca))/((vecbxxveca)^(2))`

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