The general formula of GHR (Gazis-Herman-Rothery), the most well known car following model, is given by

an - acceleration of vehicle n implemented at time t
v - speed of follower vehicle
deltax and deltav - relative spacing and speeds respectively between follower and leader vehicle at a
     ...

if you have four teams a b c and d playing in a tournament and teams a and d have not played each other but all other teams have played .. typing this from my phone but its not too friendly ...  soccer scores how would you determine who would win and by what score

Just a simple question.

If you have 10 objects and you choose 6 and order doesn't matter,

binomial(10,6)

                      210

binomial(n,r);

                         /  n    \
  ...

Recently I was able to try Maple 17 beside Maple 12.  There were little wiggles in 17's plot but not so in 12's.  I thought what if I dragged 12's plot into 17's?  What would I get?  Well here is the result.

I made a plot of x^2+10 in Maple 17 and a plot of x^2 in Maple 12 then dragged the line over. And this is the visual I got

I have a function related to some values and I want to include the value in the title.  So I initially try ...

sine:=(Amp,freq,phase,t)->Amp*sin(2*Pi*freq*t+phase):
plot(sine(1, 2, 0, t), t = 0 .. 1, title = cat(freq, " sine wave cycles"))

but once I use the value in the function it is not remembered, sort of like a subs operation.  A placeholder is the simplest way.

a:=2:
plot(sine(1, a, 0, t), t = 0 .. 1, title = cat(a, " sine wave cycles"))