Advertisements
Advertisements
Question
If `vecr=xhati+yhatj+zhatk` ,find `(vecrxxhati).(vecrxxhatj)+xy`
Advertisements
Solution
Given
`vecr=xhati+yhatj+zhatk`
`(vecrxxhati).(vecrxxhatj)+xy`
`=[(xhati+yhatj+zhatk)xxhati].[(xhati+yhatj+zhatk)xxhatj]+xy`
`=[(xhatixxhati+yhatjxxhati+zhatkxxhati)].[(xhatixxhatj+yhatjxxhatj+zhatkxxhatj)]+xy`
`=(0hati-yhatk+zhatj).(xhatk+0hatj-zhati)+xy`
`=(0z-xy+0z)+xy`
`=-xy+xy`
`=0`
shaalaa.com
Vectors Examples and Solutions
Is there an error in this question or solution?
