1
00:00:01,900 --> 00:00:10,090
Logical disjunction or in this case, we will see if the person is at least telling us one true statement

2
00:00:10,090 --> 00:00:10,660
or not.

3
00:00:11,020 --> 00:00:15,330
Here we are going to ask two questions for the first one to answer.

4
00:00:15,400 --> 00:00:17,490
Two questions are false.

5
00:00:17,550 --> 00:00:19,780
So we cannot trust this person.

6
00:00:19,780 --> 00:00:24,310
And the person is not telling us any truth for the second one.

7
00:00:24,340 --> 00:00:32,860
Here we have one false answer and the other true statement, meaning this person can at least say one

8
00:00:32,860 --> 00:00:34,020
true answer.

9
00:00:34,060 --> 00:00:37,750
Then we can just accept it and we will give it all to put up one.

10
00:00:38,200 --> 00:00:39,160
Same as this one.

11
00:00:39,160 --> 00:00:43,570
The first answer is to the second one is false after last.

12
00:00:43,870 --> 00:00:45,930
Both answers are a true statement.

13
00:00:46,270 --> 00:00:48,100
Let's just show it on a graph.

14
00:00:48,100 --> 00:00:53,400
I'm going to label this one as X and Y and just like the previous gate.

15
00:00:53,590 --> 00:01:00,700
Now let's go on and I'll show the inputs on this graph for zero point zero, which is here, and output

16
00:01:00,700 --> 00:01:01,870
is zero.

17
00:01:02,440 --> 00:01:07,900
And here we just decide to show the output of zero with a blue circle.

18
00:01:07,930 --> 00:01:12,610
And then the next one, which is X is zero, Y is one here.

19
00:01:12,640 --> 00:01:18,430
It would be somewhere around here and there showing it with the triangle.

20
00:01:19,120 --> 00:01:23,020
This is the same for the next three output.

21
00:01:23,030 --> 00:01:26,180
These are of our one output and this one is over zero two.

22
00:01:26,180 --> 00:01:32,740
But again, we are looking for a line to separate and to divide these two sets of data.

23
00:01:33,070 --> 00:01:39,820
We have three one and we have only one zero to divide these two sets of data.

24
00:01:40,090 --> 00:01:45,310
We are just drawing this line and again, we can write a mathematical function for this line.

25
00:01:45,730 --> 00:01:48,340
This one is just zero point five.

26
00:01:48,580 --> 00:01:58,600
We can already write down function X plus Y equals to zero point five and then write down the function

27
00:01:58,600 --> 00:01:59,190
of Z.

28
00:01:59,230 --> 00:02:07,030
It's just have to output either zero or one if it's zero, meaning this is the part which is zero X

29
00:02:07,030 --> 00:02:10,660
plus one is less or equal than zero point five.

30
00:02:10,660 --> 00:02:17,770
And whenever the output is one here we have X plus Y greater than zero point five.