If a-2k- and b-3-2-k- find the value of a-3b-2a-b-

B' a⃗ = î + ĵ + 2 k̂ b⃗ = 3 î + 2 ĵ k̂ 2 a⃗ = 2 î + 2 ĵ + 4 k̂ 2 a⃗ b⃗ = 2 î + 2 ĵ + 4 k̂ ( 3 î + 2 ĵ k̂) = î + 0 ĵ + 5 k̂ 3b ...

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Multiplication of a Vector by a Scalar

If a⃗=î+ĵ+2...

Question

If $\to a =^i +^j + 2^k$ and $\to b = 3^i + 2^j -^k$ , find the value of $(\to a + 3 \to b) . (2 \to a - \to b)$

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\to a = 3^i + 2^j + 2^k, \to b = -^i + 3^j -^k, \to c =^i +^j +^k

\to a \times (\to b \times \to c)

(\to a \times \to b) \times \to c

2 \to A - 3 \to B

\to A =^i +^j - 2^k

\to B = 2^i -^j +^k .

\to a \times \to b

\to a =^i + 2^j + 3^k

\to b = 3^i + 2^j +^k

\to a = 3^i - 2^j +^k,

\to b = 2^i - 4^j - 3^k, \to c = -^i + 2^j + 2^k

\to a + \to b + \to c = 4^i - 4^j

\to a =^i -^j + 2^k, \to b = 2^i + 3^j +^k, \to c =^i -^k

\to a + 2 \to b - 3 \to c

\sqrt{78}

If \to a = 2^i + 3^j +^k, \to b =^i - 2^j +^k and \to c = - 3^i +^j + 2^k,

[\to a \to b \to c] .

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