fuzzy operation help needed

I am working on creating a fuzzy operation coding without using the built-in matlab function.

I believe I am very close to finishing it but I was wondering if anyone has ever worked on such project?

for example,

x = -10:0.1:10;

g1 = trapmf(x, [-2 0 0 2]); g2 = trapmf(x, [1 4 4 7]);

for example, if I had 2 functions g1 and g2,

add:

function [x,y] = fuzzyadd(a,b,d,e)

x = a + d; y = b + e;

plot(x,y)

subtract:

function [x y] = fuzzysubtract(a,b,d,e)

x = a-e; y = b-d;

I could really use some help... Thank you.

[Walter Roberson]

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