Hard vector problem!!!!!!!!!!!!!!!!!!

[MathTutor]

HI GUYS, PLS HELPPPPPPP................

Write the projection of the vector 
a = 2^ i – ^ j + ^ k on the vector 
b = ^ i + 2^ j + 2^ k.

PLS PROVIDE EXPLANATION! NOT TOO RIGOROUS.......:grin:

PLS EXPLAIN WHAT IS PROJECTION OF VECTOR ON ANOTHER!!??????????? HOW TO DO THE PROBLEM????????????

 

[pka]

HI GUYS, PLS HELPPPPPPP................
Write the projection of the vector 
a = 2^ i – ^ j + ^ k on the vector 
b = ^ i + 2^ j + 2^ k.
PLS PROVIDE EXPLANATION! NOT TOO RIGOROUS.......

I hope you are not really a mathematics tutor. Your notation is lousy.
\(\displaystyle \text{proj}_{\vec{B}}\vec{A}=\frac{\vec{A} \cdot \vec{B}}{\vec{B} \cdot\vec{B}} \vec{B}\)