Question

i)
Show that a=i^-j^/√2 is a unit vector.​

Answer 1

Explanation:

unit vector =1

i-j/√2=1

1/√2-1/√2=1

since √2.√2=2

so 1/2-1/2=1

0=1

0-1=1

so unit vector is always and always means 1

so i-j/√2=1

so this is an unit vector