00:01
In this question there are two parts.
00:04
A part here we are given that x is related to y if and only if x square is equals to y square.
00:18
Here we need to prove that t is equivalence relation on.
00:35
So for that we need to show three things.
00:38
First we need to show that t is reflexive.
00:43
So for that, we know that x square is equals to x square for all x belongs to real numbers.
00:54
So therefore we have that x is related to x.
01:00
Therefore, t is reflexive.
01:07
Next we need to show that t is symmetric.
01:17
For that, we have that.
01:21
Let x comma y belongs to a.
01:25
And suppose x is related to y.
01:36
So this implies that x square is equals to y square.
01:41
This can be further written as y square is equal to x square.
01:46
So here this means y is related to x...