Solve

This section contains commands to find solutions to equations, inequalities and their corresponding systems. You can perform the Calc action over equations, inequalities and systems of them, and they'll be solved by default. Alternatively, you can use the solve command. The results are the same, but they have different forms.

There isn't a solution for every equation in real numbers. You can also use solve complex numbers. Not all equations have algorithms to find the answers. If the system can't see all the exact solutions, you can try numerical_solve to find one approximate solution. The command numerical_solve doesn't find all solutions. Instead, it finds one each time.

The Calc action first tries the complete solve internally, and if it fails, it uses numerical_solve. We can also store the equation's solutions in a set and then access each answer using the commands you can see in the last example below.

Solve
	Find all solutions: all values that satisfy the equation.
	Find one approximate value that satisfies the equation. An iterative method is used, and you can set the initial value.
	Solve inequalities and their corresponding systems.
	Evaluate the first parameter (expression) by replacing the second (variable) with the third (value) and performing the operations.