Octave - Use solve function to symbolic solution of equation whith one variable

Download file one_var_solve.m

% Script for solving equation with one variable using the solve function
% sytax :
% S = solve(eqn,var) solves the equation eqn for the variable var.

% load symbolic package, and initilize PYTHON variable. (Octave only).
pkg load symbolic
setenv PYTHON C:\ProgramData\Anaconda3\pythonw.exe

% Declare symbolic and variables and parameters
syms a b c x

% Define the equation to solve:
eqn = a*x^2 + b*x + c == 0

% activate solve function for x
S = solve(eqn, x)

% Solve for b:
Sb = solve(eqn, b)


Output