MHB IBV8 line L passes through the origin and is parallel to the vector 2i + 3j

AI Thread Summary
The line L is defined as passing through the origin and being parallel to the vector 2i + 3j. The vector equation for L is correctly expressed as r = (0,0) + s(2,3). It can also be simplified to L = s(2,3). The discussion emphasizes the understanding of vector addition and scalar multiplication. Overall, the conversation confirms the validity of the vector equation for line L.
karush
Gold Member
MHB
Messages
3,240
Reaction score
5
The line L passes through the origin and is parallel to the vector 2i + 3j.
Write down a vector equation for L.

$$r=(0,0)+s(2,3)$$

my question pending this is correct, could this be written as:

$$L=s(2,3)$$:confused:
 
Mathematics news on Phys.org
Yes, of course. I can't help but wonder why you are asking. I cannot imagine you being given a question like this without already know how to add vectors and multiply a vector by a number. s(2, 3)= (2s, 2s) and (0, 0)+ s(2, 3)= (0+ 2s, 0+ 3s)= (2s 3s).
 
Suppose ,instead of the usual x,y coordinate system with an I basis vector along the x -axis and a corresponding j basis vector along the y-axis we instead have a different pair of basis vectors ,call them e and f along their respective axes. I have seen that this is an important subject in maths My question is what physical applications does such a model apply to? I am asking here because I have devoted quite a lot of time in the past to understanding convectors and the dual...
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...
Back
Top