Melody

use    [2nd]

WOW Heureka !    

What does "only 9 station ways " refer to?

Sun 29/3/15

    FTJ means "for the juniors"

Yes you can and it is a little easier but it is a starting point to learn LaTex and with LaTex you can present a lot more things than you can with the calculator. 

Look at the table Heureka added on this thread.  You could not do that with the calculator!

Almost all Heureka's and my good presentations are done using LaTex.

Maybe you could explain your question better or give a proper example because I do not understand what you mean.   

This is often confusing for me too. 

I tend to keep lots of places and only round off at the end.  That is usually safest.

What a great question.  I like it!  

I have a different answer from Geno because have made different assumptions.

I have assumed that steps can be retraced so to get (0,0) for instance you could just keep going one place left then one right, one left, one right etc

I don't think that you can get the ones I have been left out but you can think about it for yourself. 

Let me see,

I have

1 at the origin,

4*5 on the rest of the axes = 20

25 in the 1st quad so that is 100 in all four quads

1+20+100=121

$$\sqrt{130}=\frac{\sqrt{130}}{1}$$

that is it, you cannot simplify sqrt(130)

That is a really good explanation - thanks Geno