Question

c d =(2i^+2j^+2k^).(8i^+8j^+8k^)
^ - it represents cap on variables..
and there is an arrow on both c and d.. ​

Answer 1

Answer:

it is a dot product

Explanation:

$cd = 2 \times 8 + 2 \times 8 + 2 \times 8 \\ = 16 + 16 + 16 = 48$

Answer 2

Explanation:

$cd = 2 \times 8 + 2 \times 8 + 2 \times 8 \\ 16 + 16 + 16 \\ 48$