Output matrix for simple function

36 views (last 30 days)
Derek
Derek on 14 Apr 2014
Commented: Evangelia Lo on 12 Nov 2021 at 18:37
I'm brand new to Matlab, and have created a very simple function here to calculate an ion's equilibrium potential:
function y = equipotent(n,X1,X2)
y = (58/n) * log10(X1/X2);
I'd like to do two things: 1) vary X2 for a set of values (1-100) while keeping X1 and n constant. and 2) store all the outputs from the function in a vector for plotting X2 vs y.
Anything helps! Thanks!

Answers (2)

the cyclist
the cyclist on 14 Apr 2014
If you change your code to
function y = equipotent(n,X1,X2)
y = (58/n) * log10(X1./X2);
then it will give a vector output y for vector input X2, and you should be all set.

Sven
Sven on 14 Apr 2014
Hi Derek,
MATLAB has some useful ways to do what you're trying to do. If you use the (.*) operator instead of (*), it will perform a vector multiplication.
Therefore you can adjust your function as follows:
function y = equipotent(n,X1,X2)
y = (58 ./ n) .* log10(X1 ./ X2);
Then you can just run commands:
y = equipotent(4, 3, X2)
figure
plot(X2,y)
Did that help you out?
  4 Comments
Evangelia Lo
Evangelia Lo on 12 Nov 2021 at 18:37
The type of function is

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by