It is (2i+3j+5k)/sqrt(38)

You do not need to divide it by sqrt(38) if you do not mind it is not a unit vector.

所有跟帖： 

• 说明数学这个东西着实不是很重要。 -有些话不得不说- ♂ (0 bytes) () 08/30/2012 postreply 13:05:49

• I was never too good at math -lilipp- ♀ (175 bytes) () 08/30/2012 postreply 13:37:17

• Probably you have not used it for >10 years -pieq314- ♀ (91 bytes) () 08/30/2012 postreply 13:16:49