MATLAB: How to solve an equation using “solve” and get a decimal approx

decimalsolve

I'm solving an equation for x using "solve(eqn,x)" and everything works fine but I get the fraction answer and I want the decimal answer. How can I change it?

Best Answer

eq='x^2-2*x-7'
s=double(solve(eq))

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MATLAB: “solve” Function

Did you solve the license problem? Until you have the software installed and licensed, solve() isn't going to work.

The answer you are looking for is along these lines:

syms x y z
xin = input('x =');
yin = input('y =');
zsol = solve('z-y=x', z);
disp(['z = ' char(zsol)]);
znum = double(subs(zsol, {x, y}, {xin, yin}));
disp(['z = ' num2str(znum)]);

MATLAB: Funcion “solve” version

No, Solve optimization problem Introduced in R2017b

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MATLAB: “solve” Function

MATLAB: Funcion “solve” version

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