Help with this small exercise with input/output and ezplot

Question

Carlo Speranza 2018-12-3

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/433605-help-with-this-small-exercise-with-input-output-and-ezplot

回答： Bohdan Syrotiuk 2018-12-3

在 MATLAB Online 中打开

The exercise asks:

I wrote this matlab code

function y=sineseries(x,n)
x1=input('Insert the 1st value here -> ');
x2=input('Insert the 2nd value here -> ');
x3=input('Insert the 3rd value here -> ');
x4=input('Insert the 4th value here -> ');
x=[x1, x2, x3, x4];
n=input('Insert the integer index n-> ');
while n<0
    disp('Error: n must be positive');
    n=input('Insert n again -> ');
end
    
sol=0;
for k=1:n
s=(-1).^(k-1)*x.^(2*k-1)./factorial(2*k-1);
sol=sol+s;
end
format long
y=sol
end 