How to find maximum value for 3 iterative variables.
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In this i have to do following operation mentioned:
Here value of a,b,z are changing continuously. For every value program will calculate value of 'y'.
It will become three dimensional array.
For entire these iterations i have to find out maximum value of 'y' and corresponding value of 'a' & 'b'.
I am facing one more problem, when i formulated array it was showing lot more zeros.
for p=1:6
a=2*p;
for q=1:6
b=5*q;
for z=1:100
k=z*z;
x=k*4+1;
y=a*x+b*k+1;
y(p,q,z)=y;
end
end
end
6 commentaires
Walter Roberson
le 7 Mar 2013
Do you want the 'a' and 'b' (as you wrote the first time) or the 'p' and 'q' (as you write now) ?
Réponse acceptée
Andrei Bobrov
le 7 Mar 2013
Modifié(e) : Andrei Bobrov
le 7 Mar 2013
max1 = [-inf 0 0 0];
for p=1:6
for q=1:6
for z=1:100
a=2*p;
b=5*q;
k=z*z;
x=k*4+1;
k1 = a*x+b*k+1;
y(p,q,z) = k1;
if k1 > max1(1), max1 = [k1,p,q,z]; end
end
end
end
2 commentaires
Plus de réponses (1)
Walter Roberson
le 7 Mar 2013
Before loop:
maxy = -inf;
a_at_max = -inf;
b_at_max = -inf;
then inside the loop, where you assign into y, test to see if the new value is greater than maxy, and if it is, record the a and b values
2 commentaires
Walter Roberson
le 7 Mar 2013
if y(p,q,z) > maxy
%then update your record of which "a" and "b" values led to this maximum
end
Oh yes and remember to update maxy with the new maximum as well.
Hint: "update" means "do an assignment to"
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