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based on an earlier version of the Wolfram Language.
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NSolve[lhsrhs, var]
gives a list of numerical approximations to the roots of a polynomial equation.
NSolve[{eqn1, eqn2, ...}, {var1, var2, ...}]
solves a system of polynomial equations.
  • NSolve[eqns, vars, n] gives results to n-digit precision.
  • NSolve[eqns, vars] gives the same final result as N[Solve[eqns, vars]], apart from issues of numerical precision.
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