Solve simple equation with the floor function.
4 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
S and P are known element in the equation. I want to find x
S = 10;
P = 13;
S = floor(P*(1-x))
I do not know how to deal with the floor functions.
0 Kommentare
Akzeptierte Antwort
Matt J
am 28 Apr. 2021
Bearbeitet: Matt J
am 28 Apr. 2021
It is the same as solving
S+delta=P*(1-x)
where 0<=delta<1 is arbitrary. The solution is then,
x=1-(S+delta)/P
It's important to keep in mind if you are solving this numerically that delta=0 will be a numerically unstable choice because the resulting x will take you close to the discontinuity of the floor function.
Let's test with delta=0.5:
S = 10;
P = 13;
delta=0.5;
x=1-(S+delta)/P
S == floor(P*(1-x)) %check
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Ordinary Differential Equations finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!