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The vectors a=hati+hatj+mhatk, b=hati+hatj+(m+1)hatk and c=hati-hatj+mhatk are coplanar, it m is equal to |
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Answer» 1 `|(1,1,m),(1,1,m+1),(1,-1,m)|=0implies|(0,0,-1),(1,1,m+1),(1,-1,m)|=0 [R_(1)rarrR_(1)-R_(2)]` `implies -1(-1-1)=0` `implies 2 NE 0` `therefore` No value of m for which vectors are coplanar. |
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