- #1

Midas_Touch

**A X B**along the direction of C = x - y + z. So I did put A and B into a matrix, but I didn't get the correct answer, which is -14.4. What am I doing wrong?

- Thread starter Midas_Touch
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- #1

Midas_Touch

- #2

mezarashi

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Then find the unit vector in the C direction.

Finally dot D with the unit vector of C.

- #3

Midas_Touch

I got -15 instead of -14.4 (the answer from the back of the book). I am not sure why it's a little off.mezarashi said:

Then find the unit vector in the C direction.

Finally dot D with the unit vector of C.

- #4

mezarashi

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I can only suggest an algebriac mistake.

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