make loop if two variable (x and y) present calculate value for (x1 and y1) and store separate name for same formula another calculate for (x2,y2) and store by separate?

x = [1 2 3 4 5];
y= [ 8 3 2 1 6];
z =  exp(x)+x*y^3 +y;

calculate it and store as

z1(x1,y1)

z2(x2,y2)

...so on..

and

plot(x1,z1)

hold on

plot(x2,z2)

hold on

plot(x3,z3)

.....

hold off

Answer 1

[VBBV]

x = [1 2 3 4 5];
y= [ 8 3 2 1 6];

% vectorize the equation (easier approach)
z =  exp(x)+x.*y.^3 +y;

% using for loop
hold on
for k = 1:numel(z)
   z(k) =  exp(x(k))+x(k)*y(k)^3 +y(k); 
  plot(x(k),z(k),'ro','MarkerSize',10,'linewidth',2);
end

figure
plot(x,z)

[Arvind]

can it store separately not in array?

[Torsten]

Sure.

z1 =  exp(x(1))+x(1)*y(1)^3 +y(1);
z2 =  exp(x(2))+x(2)*y(2)^3 +y(2);
z3 =  exp(x(3))+x(3)*y(3)^3 +y(3);
z4 =  exp(x(4))+x(4)*y(4)^3 +y(4);
z5 =  exp(x(5))+x(5)*y(5)^3 +y(5);

Now make x and y an 1x1000 array and repeat.

[Arvind]

Can this be made in a loop?

I really want this result but I want it to come from a single equation it's not to be written every time when variable changes.

[VBBV]

Can this be made in a loop?

Yes, that i what has been shown in below code

x = [1 2 3 4 5];
y= [ 8 3 2 1 6];

hold on
for k = 1:numel(x)    
   z(k) =  exp(x(k))+x(k)*y(k)^3 +y(k); % as an array
  plot(x(k),z(k),'ro','MarkerSize',10,'linewidth',2);
end

figure
hold on
for k = 1:numel(x)    
    % without array (only scalar z !) as you wanted 
   z =  exp(x(k))+x(k)*y(k)^3 +y(k);  % z will have only last value at end of loop !!!
  plot(x(k),z,'bo','MarkerSize',10,'linewidth',2);
end

[Walter Roberson]

If you are looking for a loop but also separate output variable names, then although it is technically possible, we highly recommend against that.

http://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval