How to get the limit of a rule

Question

When using the FindRoot function on a certain function, the returned object is a rule. Specifically, the outcome is {t -> 5.19188}. My question is how I could retrieve the 5.19188 value from this answer, or if this is even possible.

try t /. sol where sol ={t -> 5.19188}. Or, just sol[[1, -1]] . — kglr, Sep 29 '17 at 21:40
Or (for completeness) a kludgy approach: {t -> 5.19188}[[1, 2]] — David G. Stork, Sep 29 '17 at 21:42
Specifically, see https://mathematica.stackexchange.com/a/18706/12 — Szabolcs, Sep 29 '17 at 22:03

score 0 · Answer 1 · answered Sep 29 '17 at 22:50

0

This is done with the ReplaceAll command's infix notation syntax /.

sol={t->5.19188}
t/.sol
(*5.19188*)

answered Sep 29 '17 at 22:50

Chris Chiasson

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How to get the limit of a rule

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