# How is first figure drawn here in fuzzy logic? I know how second figure is drawn tho.

Oct 21, 2021
39

taken from here

#### Harald Kapp

##### Moderator
Moderator
Nov 17, 2011
12,737
The first figure is the same as the second. It only shows the 2 components µA and µB separately whereas the second figure shiws the resulting composite µAuB.

#### shivajikobardan

Oct 21, 2021
39
The first figure is the same as the second. It only shows the 2 components µA and µB separately whereas the second figure shiws the resulting composite µAuB.
The secnd figure is union of the first figure. But I don't understand how the first figure has been drawn bro.

#### Nanren888

Nov 8, 2015
623
Bro, dude, chum, I think the first graph is another example, unrelated to the maths above.
Short answer: You can't get the first figure from anywhere. It's an example.
Poor slide? Yes.
.
It appears that he has not defined the membership function {} used in the maths. I can't see any obvious definition that leads to a graph similar to the lower graph. Conclusion: they are not related. Just two separated examples of using MAX() as union of fuzzy sets.

Moderator
Nov 17, 2011
12,737

#### Harald Kapp

##### Moderator
Moderator
Nov 17, 2011
12,737
At around 4:00 in the video the teacher explains µA and µB as two sample membership functions. These are totally unrelated to the first example using sets A, B and the union of these, C. Nowhere in the video does the teacher make a direct connection between these two examples.

#### shivajikobardan

Oct 21, 2021
39
At around 4:00 in the video the teacher explains µA and µB as two sample membership functions. These are totally unrelated to the first example using sets A, B and the union of these, C. Nowhere in the video does the teacher make a direct connection between these two examples.
thanks sir, means a lot to me.

#### Nanren888

Nov 8, 2015
623
At around 4:00 in the video the teacher explains µA and µB as two sample membership functions. These are totally unrelated to the first example using sets A, B and the union of these, C. Nowhere in the video does the teacher make a direct connection between these two examples.
Ok,I had watched it too; did the same as you. You said it better than I did.

#### Kabelsalat

Jul 5, 2011
176
Software tip: In Inkscape, you can draw any arbitrary shape (closed path) - draw two overlapping shapes and you can do boolean operations on those.

Um, is it just me felling the Deja vu ?

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