Thank you soo much, but can you please walk me through your steps?I don't know how to do the column vector in LaTeX; so I'll use the horizontal equivalent.
Q7.
Therefore the same line.
which steps? Every one?Thank you soo much, but can you please walk me through your steps?
Yes please. btw its only for the question number 7which steps? Every one?
Question 7
Comments and Solution #1
This question is (conceptually) the equivalent of showing that
is the same as
.
@Drongoski has taken the same approach to this 3D line as would be taken for the 2D line problem... rewriting one form of the equation into the other, involving finding a relationship between and .
Solution #2(a) and (b)
A different approach is to show that the relationship between and is the same for each of the three coordinate axes. That is, if
Then, in the -direction, we have
And, in the -direction, we have
And, in the -direction, we have
This proof could also be constructed by using the result from the -direction to get that
and then substitute into the second equation and show that the first results: