Melody

Thanks jdh3010 too  

Thanks Alan, I learn something every day :))

Nice work Heureka :))

Well, that is an approximation anyway :/

What is mach?

Thanks Alan :)

Say you want to enter 3 and a half - 6 and a quarter

you do it like this

(3+1/2)-(6+1/4)     don't forget the brackets   :))

$$\left({\mathtt{3}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right){\mathtt{\,-\,}}\left({\mathtt{6}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}}\right) = {\mathtt{\,-\,}}{\frac{{\mathtt{11}}}{{\mathtt{4}}}} = -{\mathtt{2.75}}$$

Thanks Alan, 

I had started the pic before you posted I just kept getting side tracted :)

Hi Parke,

Welcome to the forum :)

The first wire is h long, the second is 2h long    the last one is f h long

h, 2h, 3h, .......  f h

This is an arithmetic progression.  The first term is h, the common diff is h  the last term is f h

The sum of all these terms is given by the forumula

$$s_n=\frac{n}{2}(a+L)$$          n=f,     a=h,    L=f h

$$\\S_f=\frac{f}{2}(h+f*h)\\\\
S_f=\frac{f*h}{2}*(1+f)\\\\$$

What is the function notation of (4,7)?

This point is on an infinite number of functions.   One possiblility is     y=x+3

Number 17910 recorded four times in a row. 

From the resulting number of extracted root of 10. What happened?

I really do not understand you question but here is one interpretation.  I doubt that it is what you want :)

$${\mathtt{17\,910}}{\mathtt{\,\small\textbf+\,}}{\mathtt{17\,910}}{\mathtt{\,\small\textbf+\,}}{\mathtt{17\,910}}{\mathtt{\,\small\textbf+\,}}{\mathtt{17\,910}}{\mathtt{\,-\,}}{\sqrt{{\mathtt{10}}}} = {\mathtt{71\,636.837\: \!722\: \!339\: \!831\: \!620\: \!7}}$$