The discussion revolves around calculating the vector product of two vectors, A and B, defined as A = i + j and B = i + k. Participants are exploring the process of finding the vector product and expressing it in unit vector form.
Participants are actively engaging with the problem, with some providing guidance on the steps to take. There is a mix of understanding and confusion, as the original poster seeks clarification on specific aspects of the vector product calculation.
There are indications of missing information regarding the properties of cross products and how to properly express the result in unit vector notation. Participants are also navigating the conventions of notation for vector and scalar products.
) …thanxtiny-tim said:hi draotic! welcome to pf!
write it (i + j) x (i + k), and use the distributive law
(ie, expand the brackets!
what do you get?
)draotic said:
tiny-tim said:hi draotic!
(try using the B tag just above the Reply box
that's right!
except of course, please use "x" for the vector product (the https://www.physicsforums.com/library.php?do=view_item&itemid=85" ), and "." for the scalar product (the dot product )
i x i = 0
j x i = -i x j = … ?
means the correct anser is i-j-ktiny-tim said:i don't understand what you mean by " https://www.physicsforums.com/library.php?do=view_item&itemid=85" in i j k form"
oops!tiny-tim said:i don't understand what you mean by " https://www.physicsforums.com/library.php?do=view_item&itemid=85" in i j k form"
draotic said: