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| 1. |
If a=hati+hatj,b=hatj+hatk,c=hati+hatk, then ([(bxxc)xx(cxxa)(cxxa)xx(axxb)(axxb)xx(bxxc)])/([b+c" "c+a" "a+b][bxxc" "cxxa" "axxb]) |
| Answer» ANSWER :B | |