Question #285945

Given that: š“= 2i + 9j +3k and šµ= -i ā€“ 4k . Find š“ š‘‹šµ


1
Expert's answer
2022-01-10T09:16:44-0500

Aāƒ—Ć—Bāƒ—=(āˆ’36āˆ’0)iāƒ—āˆ’(āˆ’8+3)jāƒ—+(0+9)kāƒ—=āˆ’36iāƒ—+5jāƒ—+9kāƒ—.\vec AƗ\vec B=(-36-0)\vec i-(-8+3)\vec j+(0+9)\vec k=-36\vec i+5\vec j+9\vec k.


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