Question

Need help with this simple MATLAB code. I'm trying to plot a new set of Y values from input X values. I get an error that says: "not enough input arguments."

clear all
clc
close all
Q = 3.44E+18;
D = 1.51E-17;
t = 7200;
x = [1E-6 2E-6 2.5E-6 3E-6 4.32E-6];
y = Q/sqrt((pi*D*t))*exp^(-(x)^2/(4*D*t))
plot(x,y, '*r')

xlabel('Depth'), ylabel('Concentration')

Answer 1

CORRECTED MATLAB CODE

clear all
clc
close all
Q = 3.44E+18;
D = 1.51E-17;
t = 7200;
x = [1E-6 2E-6 2.5E-6 3E-6 4.32E-6];
y = Q/sqrt((pi*D*t))*exp(-(x).^2/(4*D*t))
plot(x,y, '*r')

xlabel('Depth'), ylabel('Concentration')

OUTPUT

4 2 2.5 3.5 Depth 4.5

EXPLANATION: You were doing mistake in this statement y = Q/sqrt((pi*D*t))*exp^(-(x)^2/(4*D*t)) , You were using a power sign in exp instead it should just be used without the power sign (^) . And another correction about the element by element multiplication by not using dot ( . ) operator, hence it should be used. The corrected statement y = Q/sqrt((pi*D*t))*exp(-(x).^2/(4*D*t))