Mathematics, 08.12.2021 23:00 Crtive5515
. (a) If a and bare two vectors such that 3i+2j +9k and b = i + aj + 3k. Find the value of a so that a+b is perpendicular to a-b.
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. (a) If a and bare two vectors such that 3i+2j +9k and b = i + aj + 3k. Find the value of a so that...
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