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Solves the expression for the given variable.
When no equals sign is given, Solve assumes the expression is equal to zero. For example, Solve(x^2-3) will solve the expression as x^2-3=0.
Quadratic expressions can be solved by entering each coefficient as a parameter. For instance, Solve(5x^2+3x+4) may also be entered as Solve(5,3,4).
Solve can also solve a system of linear equations with n unknowns.
Solve(equation1, equation2, equation3, ...)
See SolveSystem to solve a system of non-linear equations.
This optional parameter guess is the initial guess value to solve the equation. If a list of two values is given such as Solve(sin(x)=0,x,[0,6\pi]), Solve will return the solutions within the given range. SolveSystem, Eval
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