00:02
Okay, number 90, the number of years.
00:04
N.
00:06
Since two independently involving languages split off from a common ancestral language is approximated by this function.
00:15
Okay, interesting.
00:17
Well, r is the proportion of the words from the ancestral language that are common to both languages now, find the following.
00:25
Okay, so the first three we just need plug in r with those numbers, right? so n of 0 .9 equals negative 5 ,000 latch log of 0 .9.
00:41
If we use calculator, it's going to be negative 5 ,000, letch long 0 .9.
00:55
526 .8 .0.
01:02
So it's been 526 years since those two languages.
01:12
The same as second one, 0.
01:14
Equals plugin 0 .5.
01:22
So just changes 0 .5, which is wow, this is way more.
01:33
Makes sense because it's exponential, not many years.
01:39
So 0 .3 and 0 .3 equals 95 ,000 national 0 .3.
01:50
Now just changes to 0 .3.
01:54
6 ,019 years.
01:58
19 .86...