How can I control the tolerance in vpasolve?

I am using vpasolve to solve a system of seven equations in seven unknowns.

I have a set of data that solve the system with a tolerance of 0.1e-3 (that is, the tolerance with which the absolute value of the difference between the left-hand side and the right-hand side of each equation is equal to zero). Such a tollerance is OK for my applications, but, unfortunately, vpasolve uses as default tolerance a tighter value and it is not able to find the solutions of my system.

How can I control the tolerance in vpasolve?

Answer 1

[Sulaymon Eshkabilov]

Here is one example show how to adjust vpasolve tolerance:

syms x 
EQN = sin(2*x) == 0.5;
% Default
sol_D= vpasolve(EQN,x)

sol_D = 

0.26179938779914943653855361527329

% Controlled using digits()
N = 3;
digits(N)
sol_C= vpasolve(EQN,x)

sol_C = 

0.262

[Raffaele Di Gregorio]

Thanks! It works well

[Dyuman Joshi]

This just changes the number of significant digits of the output. It does not satisfy the tolerance, see below.

And I don't think vpasolve() uses any tolerance to solve.

syms x 
EQN = sin(2*x) == 0.5;
% Default
sol_D= vpasolve(EQN,x);
% Controlled using digits()
N = 3;
digits(N)
sol_C= vpasolve(EQN,x)

sol_C = 

0.262

isAlways(abs(0.5-sol_C)<10^-N)

ans = logical
   0