A→=i^+2j^-3k^ এবং B→=3i^-j^+2k^
∴A→+B→=4i^+j^-k^ এবং A→-B→=-2i^+3j^-5k^
এখন, A→+B→A→-B→=4i^+j^-k^-2i^+3j^-5k^
=-8+3+5=0 showed.
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