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edited Apr 13, 2017 at 12:56

This reminds me of NSolve finds real-valued results in version 9, but not in version 10 NSolve finds real-valued results in version 9, but not in version 10, in which you can use any of the Method settings from Methods for NSolve Methods for NSolve

"EndomorphismMatrix"
"CompanionMatrix"
"Legacy"
"Aberth"
"JenkinsTraub"

or even a nonexistent method "Foo":

NSolve[eqs, {x1, x2, x3, x4}, Reals, Method -> "Foo"]
(*
  {{x1 -> 23.2915, x2 -> -28.505, x3 -> 55.2247, x4 -> -0.0852683},
   {x1 -> 46.3516, x2 -> -5.36977, x3 -> 9.01972, x4 -> -0.0198153},
   {x1 -> 56.3754, x2 -> -0.000327403, x3 -> -3.16593, x4 -> -1.46634},
   {x1 -> 54.9, x2 -> 3.2, x3 -> -1.80018*10^-7, x4 -> -6.26944*10^-10},
   {x1 -> 52.6254, x2 -> 0.0121417, x3 -> -2.70055, x4 -> -0.976273},
   {x1 -> 52.2298, x2 -> -0.0000285978, x3 -> 0.928352, x4 -> 2.62754},
   {x1 -> 49.4605, x2 -> 0.00100605, x3 -> 0.511294, x4 -> 2.21332},
   {x1 -> 53.0999, x2 -> 4.30992*10^-13, x3 -> 0.000114669, x4 -> 7.99797}}
*)

This reminds me of NSolve finds real-valued results in version 9, but not in version 10, in which you can use any of the Method settings from Methods for NSolve

"EndomorphismMatrix"
"CompanionMatrix"
"Legacy"
"Aberth"
"JenkinsTraub"

or even a nonexistent method "Foo":

NSolve[eqs, {x1, x2, x3, x4}, Reals, Method -> "Foo"]
(*
  {{x1 -> 23.2915, x2 -> -28.505, x3 -> 55.2247, x4 -> -0.0852683},
   {x1 -> 46.3516, x2 -> -5.36977, x3 -> 9.01972, x4 -> -0.0198153},
   {x1 -> 56.3754, x2 -> -0.000327403, x3 -> -3.16593, x4 -> -1.46634},
   {x1 -> 54.9, x2 -> 3.2, x3 -> -1.80018*10^-7, x4 -> -6.26944*10^-10},
   {x1 -> 52.6254, x2 -> 0.0121417, x3 -> -2.70055, x4 -> -0.976273},
   {x1 -> 52.2298, x2 -> -0.0000285978, x3 -> 0.928352, x4 -> 2.62754},
   {x1 -> 49.4605, x2 -> 0.00100605, x3 -> 0.511294, x4 -> 2.21332},
   {x1 -> 53.0999, x2 -> 4.30992*10^-13, x3 -> 0.000114669, x4 -> 7.99797}}
*)

This reminds me of NSolve finds real-valued results in version 9, but not in version 10, in which you can use any of the Method settings from Methods for NSolve

"EndomorphismMatrix"
"CompanionMatrix"
"Legacy"
"Aberth"
"JenkinsTraub"

or even a nonexistent method "Foo":

NSolve[eqs, {x1, x2, x3, x4}, Reals, Method -> "Foo"]
(*
  {{x1 -> 23.2915, x2 -> -28.505, x3 -> 55.2247, x4 -> -0.0852683},
   {x1 -> 46.3516, x2 -> -5.36977, x3 -> 9.01972, x4 -> -0.0198153},
   {x1 -> 56.3754, x2 -> -0.000327403, x3 -> -3.16593, x4 -> -1.46634},
   {x1 -> 54.9, x2 -> 3.2, x3 -> -1.80018*10^-7, x4 -> -6.26944*10^-10},
   {x1 -> 52.6254, x2 -> 0.0121417, x3 -> -2.70055, x4 -> -0.976273},
   {x1 -> 52.2298, x2 -> -0.0000285978, x3 -> 0.928352, x4 -> 2.62754},
   {x1 -> 49.4605, x2 -> 0.00100605, x3 -> 0.511294, x4 -> 2.21332},
   {x1 -> 53.0999, x2 -> 4.30992*10^-13, x3 -> 0.000114669, x4 -> 7.99797}}
*)

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answered Jun 28, 2016 at 4:58

Michael E2

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This reminds me of NSolve finds real-valued results in version 9, but not in version 10, in which you can use any of the Method settings from Methods for NSolve

"EndomorphismMatrix"
"CompanionMatrix"
"Legacy"
"Aberth"
"JenkinsTraub"

or even a nonexistent method "Foo":

NSolve[eqs, {x1, x2, x3, x4}, Reals, Method -> "Foo"]
(*
  {{x1 -> 23.2915, x2 -> -28.505, x3 -> 55.2247, x4 -> -0.0852683},
   {x1 -> 46.3516, x2 -> -5.36977, x3 -> 9.01972, x4 -> -0.0198153},
   {x1 -> 56.3754, x2 -> -0.000327403, x3 -> -3.16593, x4 -> -1.46634},
   {x1 -> 54.9, x2 -> 3.2, x3 -> -1.80018*10^-7, x4 -> -6.26944*10^-10},
   {x1 -> 52.6254, x2 -> 0.0121417, x3 -> -2.70055, x4 -> -0.976273},
   {x1 -> 52.2298, x2 -> -0.0000285978, x3 -> 0.928352, x4 -> 2.62754},
   {x1 -> 49.4605, x2 -> 0.00100605, x3 -> 0.511294, x4 -> 2.21332},
   {x1 -> 53.0999, x2 -> 4.30992*10^-13, x3 -> 0.000114669, x4 -> 7.99797}}
*)