How to show in edittext the polynomial ordered from highest to lowest grade?

What happens is that my program in edittext edit the polynomial but all messy can you print but in an orderly way? From highest to lowest?

Answer 1

[Walter Roberson]

Use the two-output form of coeffs to extract the coefficients and the corresponding powers. The powers will be sorted in descending order. You can then construct a character string from the parts.

[cs, pows] = coeffs(YourPolynomial, AppropriateVariable);
 temp = sprintf( '%s * %s +', [cs(:), pows(:)].' );   %transpose is important
 temp(end-1:end) = [];   %trim trailing ' +'

[Erwin Avendaño]

thanks but I really had no idea how to accommodate it

[Erwin Avendaño]

y = is the polynomial that is obtained after doing operations in my program z=simplify(y) set(handles.edit23,'String',char(z))

[Walter Roberson]

syms x y = expand((x-1)^3+x);

[cs, pows] = coeffs(y, x); z = sprintf( '%s * %s + ', [cs(:), pows(:)].' ); %transpose is important z(end-2:end) = []; %trim trailing ' + ' set(handles.edit23,'String',char(z))

You can get fancier, such as suppressing '1 *' if it occurs, or the final '* 1' if it occurs, and by handling negative values. The easiest way to handle those is probably to do some pattern matching on z using regexprep.