How to input solution for the matrix in for loop.
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I need to show the out put that are each the column matrix. See the code
clear all;
u=inline('exp(-t)*cos(pi.*x-pi/2)','x','t');
f=inline('cos(pi.*x-pi/2)','x');
h=[0.1 0.05 0.01], k=[0.1 0.05 0.01] %x-step size h, t-step size k
n=size(h,2);
a=0; b=1;
T=0.4;
for i=1:n
x=[a:h(i):b];
t=[0:k(i):T];
N=size(x,2);
M=size(t,2);
w(:,1)=f(x) % This is error !!
end
How do I write ? Thanks.
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Antworten (1)
drummer
am 11 Mai 2020
Not sure where your variable w came from.
It is not clear, at least for me, why you mentioned x and h steps as a vector...Do you have to use variable steps?
Ex: step 1 = 0.1 step 2 = 0.05 step 3 = 0.01 so, iteratively:
i = 1, x = 0.10
i = 2, x = 0.15
i = 3, x = 0.16
i=4, x = 0.51 ... and so on?
This is a quick solution that came to mind...
clear all;
step1 = 0.1;
step2 = 0.05;
step3 = 0.01;
n=9;
arraySum = zeros(n,1);
Sum = 0;
for i = 1:3:n % arraySum refers to your x interval. are the steps variable?
arraySum(i) = step1 + Sum;
arraySum(i+1) = arraySum(i+1)+step2+arraySum(i);
arraySum(i+2) = arraySum(i+1)+step3;
Sum = arraySum(i)+arraySum(i+1)+arraySum(i+2); % sum the previous values
end
x = arraySum
f = cos((pi/2).*x)
plot(f,x)
xlim([0 1])
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