Array indices must be positive integers or logical values. in line 5

n=input('\n Enter number of elements = ');
 
fori=1:n;
tx=input('\n Enter the value of x = ');
temp=input('\n Enter the value of y = ');
x(i)=log(tx);
y(i)=log(temp);



s0=0;
s1=0;
s2=0;
s3=0;

for i=1:n
    s0=s0+x(i);
    s1=s1+y(i);
    s2=s2+x(i)*y(i);
    s3=s3+x(i)*x(i);
end
d=s0*s0-n*52;
da=s1*s0n*52;
db=s0*s2-s1*s3;

a1=da/d;
b1=db/d;

b=a1;
a=exp(b1);

fprintf('\n y=(%f)x^(%f)',a,b);

Answer 1

[Matt J]

Correct the missing space in,

fori=1:n;

[Matt J]

Also, learn to step through your code:

https://www.mathworks.com/help/matlab/matlab_prog/debugging-process-and-features.html#mw_ac72dfe1-d6fd-4e82-87ad-89b1257f7593

Answer 2

[Kalpesh Bagmar]

I dont know what exactly are you trying to achieve with this logic. If you can throw some light on that, it will be helpful.

I have edited your code snippet to make it error free, if in case this is want you want.

n=input('\n Enter number of elements = ');
x={}
y = {}
for i=1:n
    tx=input('\n Enter the value of x = ');
    temp=input('\n Enter the value of y = ');
    x{i}=log(tx);
    y{i}=log(temp);
    s0=0;
    s1=0;
    s2=0;
    s3=0;
    for j=1:i %we cannot iterate to n as x array only has i elements at any given time
        s0=s0+x{j};
        s1=s1+y{j};
        s2=s2+x{j}*y{j};
        s3=s3+x{j}*x{j};
    end
    d=s0*s0-n*52;
    da=s1*s0-n*52;
    db=s0*s2-s1*s3;
    a1=da/d;
    b1=db/d;
    b=a1;
    a=exp(b1);
    fprintf('\n y=(%f)x^(%f)',a,b);
end