Solve linear system by trial and error

2018 9 9
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更新时间：2018 9 9
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I need to solve an equation like x=a+b; putting a condition such that x>b. How can i do that in matlab ?

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madhan ravi
madhan ravi 2018-9-9
编辑：madhan ravi 2018-9-9

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Try this:
syms x a b
assume(x>b)
eqn=x==a+b
sol=solve(eqn,x,'ReturnConditions',true)
sol.x

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carl hooper
carl hooper 2018-9-9
Thanks for your reply. If a=100; b=[1;2;3]; equation is: x=a+sum(b); I am looking for a solution that will satisfy x>b (i.e, x will be greater than any member of b.
madhan ravi
madhan ravi 2018-9-9
编辑：madhan ravi 2018-9-9
syms x
a=100
b=[1;2;3]
assume(x>b)
eqn=x==a+sum(b)
sol=solve(eqn,x,'ReturnConditions',true)
sol.x
madhan ravi
madhan ravi 2018-9-9
编辑：madhan ravi 2018-9-9
This will display the solution if and only if x greater than any member of b.
madhan ravi
madhan ravi 2018-9-9
@carl did it satisfy?

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