Compute the dot product. (Give an exact answer. Use symbolic notation and fractions where needed.) (2j + 5k) · (i ? 9j) = 10
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In this case, we have (2j + 5k) · (i - 9j). To calculate the dot product, we need to multiply the corresponding components: (2j) · (i) + (2j) · (-9j) + (5k) · (i) + (5k) · (-9j) The dot product of j and i is 0 because they are perpendicular to each other. The Show more…
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