Symbolic printing without extensive decimals

    syms x

f=x*1231871.1561876*5618965/3156651894-561894+4849159*15844/5189;
l=vpa(x*1231871.1561876*5618965/3156651894-561894+4849159*15844/5189);
fprintf('%s\n',f)
fprintf('%s\n',l)
(1351321833700369665875*x)/616259847708475392 + 7647426328677875/536870912
2192.7792938728320167173931401797*x + 14244441.555212950333952903747559

I am trying to get my problem to print more efficiently, I have tried the vpa tool, and it works nicely, but I have no customization (as far as im aware) as to how to control the number of decimal places on the polynomial that is being printed using these commands while having a symbolic function/polynomial.

How can I tidy up this so that it prints in an easier to read format, with, for example, 5 decimal places rather than the amount it has?

Answer 1

[Star Strider]

Set digits to whatever value you want:

syms x
f=x*1231871.1561876*5618965/3156651894-561894+4849159*15844/5189;
digits(5)
l=vpa(x*1231871.1561876*5618965/3156651894-561894+4849159*15844/5189);

fprintf('%s\n',f)
fprintf('%s\n',l)

producing:

(1351321833700369665875*x)/616259847708475392 + 7647426328677875/536870912
2192.8*x + 1.4244e+7

.

[Ramses Young]

Perfect, thanks!

[Star Strider]

As always, my pleasure!

Answer 2

[Martinez Tutt]

Try using (line spacing)