00:01
Good afternoon or good evening.
00:02
I don't know what time of day it is for you, but welcome, numerate of a student.
00:06
This question that we'll be dealing with has to do with inequalities, and it has to do with the power of a received signal to the power of the noise, and this ratio is required to be at least two at all times.
00:21
So first, we can easily start with the simple s divided by n should be greater than equal to two.
00:28
We want to use this if, in the ideal situation, this is what we would desire.
00:36
However, they also say that the noise is allowed to fluctuate a little bit.
00:42
So they say it's allowed to fluctuate by 10%.
00:46
So that means that instead of using just n, we should check 1 .1n and 0 .9n, because this is 110 % of n and this is 90 % of n.
01:00
And so let's replace n with these two new so we have s divided by 0 .9n and s divided by 1 .1n...