Computing values of a formula
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Hi,
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1053255/image.png)
I tried to solve this equation but apperantly my output is wrong, can you tell me what am I missing ?
clc
clear
close all
n=input('Please enter n : ')
x=input('Please enter x : ')
for k=0:floor(n/2);
H=((-1)^k)*factorial(n)*(x^(n-2*k))/(2^k*factorial(k)*factorial(n-2*k));
H=H+((-1)^k)*factorial(n)*(x^(n-2*k))/(2^k*factorial(k)*factorial(n-2*k));
end
H
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Abhishek Tiwari
2022-7-2
编辑:Abhishek Tiwari
2022-7-2
Hi,
It appears that it is updating and doubling H with each cycle. So, the code you provided just doubles the result of the final step, i.e. when k = floor (n/2). Try initialising H before the loop and remove first line in the 'for' loop as demonstrated
clc
clear
close all
n = 10;
x = 2;
H = 0;
for k=0:floor(n/2);
H=H+((-1)^k)*factorial(n)*(x^(n-2*k))/(2^k*factorial(k)*factorial(n-2*k));
end
H
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