Assigning values to variables after using isolate?
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Here is my code:
%% Model
syms M n D t r
eqn = M - (1 - 6/(pi^2)) * symsum((1/n^2 * exp((-D*n^2*pi^2*t)/(r^2))),n,0,Inf) == 0;
%% Variables
t = [0.50373, 43.2325, 86.72428, 129.74978, 173.8774, 216.69095];
M = [0.75233, 62.53212, 67.84044, 67.6522, 80.90417, 82.59832];
r = 130/(10^9);
Dsol = isolate(eqn, D)
disp(Dsol)
However, the output is just the solution to Dsol and not the actual array of Dsol values. How can I assign the values to t, M, and r to obtain an array for Dsol?
0 Kommentare
Antworten (1)
Devineni Aslesha
am 22 Jun. 2020
In your code, check with the symsum function as it do not return the sum of the series((-D*n^2*pi^2*t)/(r^2))) with respect to the summation index n. You can use the subs function to get the actual array of Dsol values as shown below.
subs(rhs(Dsol),{t,M,r},{t1,M1,r1});
Here, t1 = [0.50373, 43.2325, 86.72428, 129.74978, 173.8774, 216.69095]
M1 = [0.75233, 62.53212, 67.84044, 67.6522, 80.90417, 82.59832] and
r1 = 130/(10^9);
0 Kommentare
Siehe auch
Kategorien
Mehr zu Calculus 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!