hi, thank you for your quick response; this is what I am trying to do:
s(t) = <cos(t), sin(t)>
v(t) = <-sin(t), cos(t)>
a(t) = <-cos(t), -sin(t)>
These are vectors expressed in parametric form; it is a circle. In physics, we know that velocity vectors are tangent to circle whereas acceleration is perpendicular to the velocity vector. What I'm trying to do is represent a numerous tangent lines on the parametrically expressed circle.
In general terms, we can represent a vector line segment as:
[a,b] + t[c,d]
To represent the velocity vectors, we do:
<cos(t), sin(t)> + q<-sin(t),cos(t)>
From this, I wish to tell maple to substitute a bunch of values into q so I can create multiple equations.
In Derive6.1, the notation is vector(<cos(t), sin(t)> + q<-sin(t),cos(t)>, t, 0, 2Pi, Pi/30)
Thank you in advance.