Question

11
Find the, P. Q where P = 2 icap +2 jcap+k
cap and Q=icap — jcap+ 2 kcap​

Answer 1

Answer:

2

Explanation:

Remember, square of similar unnit vector is 1 and as it is a scalar product, you have to multiply same unit vectors.

It means Î x Î and so on...

Now , it becomes 2+(-2)+2

So, answer is 2.

Hopw it helps.

Thanks.