- #1
icesalmon
- 270
- 13
Homework Statement
sketch r(t) = (-T+1)i + (4T+2)j + (2T+3)k
The Attempt at a Solution
I have a vector <-1,4,2> and a point (-1,-2,-3)
x= -1(t)+(-1)
y = 4(t)+(-2)
z = 2(t) +(-3)
and solve for t in terms of x
x = -t -1
t = -1-x
and rewrite the y and z expressions in terms of x
y = 4(-1-x) -2
z = 2(-1-x) -3
y= -4x-6
z = -2x -5
I graph y = -4x-6
and z = -2x -5 (i have no idea how to get a single expression out of these or how to address the problem of graphing r(t) without going through this process (should I just pick values for T (e.g t = 0, t = -1, t =1 etc... this is a rather tedious way to do this)
I end up getting two separate lines, where obviously there is just a single line