If a- b-2 k- then the value of a-2 b- -a-b- is

The correct option is D 9a 2b = (î ĵ) 2 ( ĵ+ 2k̂) nbsp; = (î ĵ) +2ĵ 4 k̂ = (î+ ĵ 4 k̂) (a+b) = (î ĵ)+ ( ĵ+ 2 k̂) = î ĵ ĵ + 2 k̂ = ( î 2 ĵ+ ...

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Multiplication with Vectors

If a⃗=î-ĵ, b⃗...

Question

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

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

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{{(\to a \times \to b) \times \to a} \times \to a} \times \to b =

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\to c^{'} = 2^i +^j -^k

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