Substitute all solutions of a give system of equations.

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Alessio Nava
Alessio Nava 2013-4-23
评论： Radu Trimbitas 2014-9-10
I would like to substitute all the solutions of a system of equations in the original system. For example I would like to do something like this in Mupad:
eqs:=[x^2-1,y^2-1]
solutions:=solve(eqs)
and then create a matrix which contains all the couples of solutions; I tried with evalAt and subs combined with map and op but had no luck.
Any suggestions?
  1 个评论
Radu Trimbitas
Radu Trimbitas 2014-9-10
The idea is to consider the solution as a list and to evaluate the equation for the elements given in that list. The Mupad code is
eqs:=[x^2-1,y^2-1]:
solve(eqs,{x,y}):
zz:=op(%):
f:=l->(eqs)|l:
map([zz],f)

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2013-4-23
syms x y
eqs=[x^2-1,y^2-1]
sol=solve(eqs)
M=[sol.x sol.y]

更多回答（1 个）

Alessio Nava
Alessio Nava 2013-4-23
And what about replacing x and y in eqs with all the couples contained in the vector M?

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