- Thread starter
- #1
Petrus
Well-known member
- Feb 21, 2013
- 739
Hello MHB,
This is an old exam.
In top of the exam paper it says. Evrything is on Orthogonal-System
Vector \(\displaystyle u\) got the length \(\displaystyle 3\), vector \(\displaystyle v\) got the length \(\displaystyle 2\) and vector u-v got the length \(\displaystyle \sqrt{7}\)
(a) calculate length of vector \(\displaystyle u+v\)
(b) calculate the angle between \(\displaystyle u\) and \(\displaystyle v\)
I did not understand how you do (a) and for (b) I got confused cause if it's orthogonal System then the angle will be \(\displaystyle \frac{\pi}{2}\) but that is wrong. So I assume we don't got orthogonal system in this one?
Regards,
\(\displaystyle |\pi\rangle\)
This is an old exam.
In top of the exam paper it says. Evrything is on Orthogonal-System
Vector \(\displaystyle u\) got the length \(\displaystyle 3\), vector \(\displaystyle v\) got the length \(\displaystyle 2\) and vector u-v got the length \(\displaystyle \sqrt{7}\)
(a) calculate length of vector \(\displaystyle u+v\)
(b) calculate the angle between \(\displaystyle u\) and \(\displaystyle v\)
I did not understand how you do (a) and for (b) I got confused cause if it's orthogonal System then the angle will be \(\displaystyle \frac{\pi}{2}\) but that is wrong. So I assume we don't got orthogonal system in this one?
Regards,
\(\displaystyle |\pi\rangle\)