## 15 Reputation

4 years, 263 days

## @Joe Riel  Hey Joe, Thank...

Hey Joe,

Thank you for replying. Please find attached a sample file. Also I am pasting the exact content.

> restart;
> with(StringTools);
> S := [diff(x(t), t) = y(t), diff(y(t), t) = x(t)^2];
[ d                d             2]
[--- x(t) = y(t), --- y(t) = x(t) ]
[ dt               dt             ]
> qwv := x(t), y(t);
> PDEtools:-declare(qwv, prime = t);
x(t) will now be displayed as x
y(t) will now be displayed as y
derivatives with respect to t of functions of one variable will

now be displayed with '
> S; lprint(%);
[ d                d             2]
[--- x(t) = y(t), --- y(t) = x(t) ]
[ dt               dt             ]
[diff(x(t), t) = y(t), diff(y(t), t) = x(t)^2]
> sprintf("%a & %a", S[1], S[2]);
#Note that I want the eqn in form: x'=y & y'=x^2
"diff(x(t),t) = y(t) & diff(y(t),t) = x(t)^2"
> Q := convert(S[1], string);
"diff(x(t),t) = y(t)"
> sprintf("%s", Q);
"diff(x(t),t) = y(t)"
#I have tried different approaches to print the output in the required format into a text file. The other problem is when I write "&amp;", Maple convert it into "&".
>