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| 1. |
If oversetrarra=4overset^i+noverset^j+3overset^k|oversetrarra|=13, what is the value of n ? |
| Answer» SOLUTION :`[oversetrarraoversetrarrboversetrarrc]=5[oversetrarraxxoversetrarrboversetrarrbxxoversetrarrcoversetrarrcxxoversetrarra]`=[oversetrarraoversetrarrboversetrarrc]^2=25` | |