Can someone check my for loop?
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My for loop is suppose to return the minimum value found in the for loop, but it just keeps returning the last found value. How can I make it return the minimum value found?
This is my code:
function m=myminimum (f,a,b);
syms x ;
for t=(a:b);
m=subs(f(x),t);
end
m=min(m);
end
Here is some sample data I have been running through the for loop along with what the answer it's suppose to be.
myminimum(@(x) x^2+1,-3,2)
ans =
1
The answer my for loop provides is 5.
myminimum(@(x) x^2+6*x-3,-2,0)
ans =
-11
The answer my for loop provides is -3.
How do I make my for loop return the minimum value of the for loop and not just the last found value?
Thanks
0 Comments
Accepted Answer
Star Strider
on 4 Oct 2014
You need to tweak your loop a bit:
syms x
min_m = Inf;
for t=(a:b);
m=subs(f(x),t);
min_m = min(m, min_m);
end
m=min_m;
It initially sets ‘min_m’ to Inf, then in each iteration compares the current value of ‘m’ with the previous value and assigns ‘min_m’ to the minimum value of that comparison. It returns that value as ‘m’.
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