यदि `bara=bari-barj+bark` तथा `bar=-bari+barj-bark` तो `|bara+barb|` का मान क्या होगा?

[bari-barj bark]+[-bari-barj bark]+[bari-bark bark] =

If bara = bari - 2barj - 3bark , barb= 2bari + barj - bark , barc = bari + 3barj - 2bark find bara xx (barb xx barc) .

(bari-barj) xx (barj-bark).(bark-bari) =

If bara = bari - 2barj - 3bark, barb = 2bari + barj - bark , barc = bari + 3barj - 2bark then find bar(a) xx (barb xx barc) and |(barb xx barc) xx barc | .

Let bara = 2bari -barj+bark , barb=bari+2barj-bark , barc=bari+barj-2bark be the three vectors. A vector in the plane of barb, barc " and whose projection on " bara " of magnitude " sqrt(2/3) is

Prove that the vectors bara= 2bari - barj + bark, barb = bari -3barj -5bark and barc=3bari -4barj -4bark are coplanar.

If bara= 2bari+barj-3bark, barb = bari-2barj+bark, barc = -bari+barj-4bark" and "bard=bari+barj+bark , then compute |(bara xx barb)xx (barc xx bard)| .

If bara = -bari+2barj+3bark, barb = bari -2barj+bark, barc = 4bari-3barj-2bark and bara +lambda barb " is perpendicular to " barc, " then " lambda =

If bara= bari-2barj-3bark, barb= 2bari+barj-bark, barc= bari+3barj-2bark , find bara xx (barb xx barc) .