Question

dot product... m e=(4i^-4j^).(50i^)... there is an arrow on m and e .. and ^represents caps on variables .. ​

Answer 1

Answer:

The dot product of vectors \text{u}=〈{u}_{1},{u}_{2},{u}_{3}〉 and \text{v}=〈{v}_{1},{v}_{2},{v}_{3}〉 is given by the sum of the products of the components

\text{u}·\text{v}={u}_{1}{v}_{1}+{u}_{2}{v}_{2}+{u}_{3}{v}_{3}.