Multiple Equations with solveset

[Bobby Rullo]

Hi there,

Given a number of equations, I can give them to solve to get the solution set, eg: 

solutions = solve([eq1, eq2, eq3])

However, solve seems to be deprecated in favor of solveset, but solveset only takes a single equation:

solutions = solveset([eq1, eq2, eq3])

ValueError: [Eq(x, 1), Eq(y, 2), Eq(z, x + y)] is not a valid SymPy expression

Is there way to combine a number of equations to a single one? I am very new to Sympy so I am sure I am missing something simple!

Thanks,

Bobby

[Bobby Rullo]

Here's one thing I tried but did not work. 

a,b,c = symbols('a b c')

expr = Eq(a, 10) & Eq(b, 80) & Eq(a + b + c, 100)

solveset(expr, a)

ValueError: Eq(a, 10) & Eq(b, 80) & Eq(a + b + c, 100) is not a valid SymPy expression

So it turns out that the boolalg expressions are not Exprs. 

Bobby

[Shekhar Prasad Rajak]

Hello Bobby,

You can use `linsolve` for linear system of equation and `nonlinsolve` for non linear system of equation.

Cheers,

Shekhar