# How to get output using a function with two parameters of different range

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Tino on 13 Apr 2021
Commented: Tino on 3 Jun 2021
For instance, I have a function x = cb( a, b)
the paramter a ranges from 0 to 1 and b ranges from (2 to 20).
How do I perform a for loop to plot x for these parameters range.
Your help will be greatly appreciated
Best wishes
##### 6 CommentsShowHide 5 older comments
Tino on 13 Apr 2021
Also I would like to display in the plot the optimal values for x function and the value of a and b that gives the optimal x values if possible

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### Accepted Answer

Abhishek Gupta on 16 Apr 2021
Edited: Abhishek Gupta on 16 Apr 2021
Hi,
As per my understanding, you want to display a surface plot between a, b, and x. You can do the same as follows: -
a = linspace(0, 1, 10);
b = linspace(2, 20, 10);
[X,Y] = meshgrid(a,b);
Z = cb(X, Y);
surf(X,Y,Z);
For more information, check out the documentation link below: -
##### 1 CommentShowHide None
Tino on 3 Jun 2021
Thank you

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