00:01
Hello everyone, there is a question given.
00:02
A news item is spread by word of mouth to a potential audience of 5 ,000 people, okay? the following funds and the number of people who have heard the news after t days, compute parts through a ft is equal to 5 ,000 divided by 1 plus 60 e power minus 0 .40 and we have to answer some questions.
00:22
In first part we have asked approximately how many people will have heard the news after 7 days? so see the solution.
00:31
We have given the function that is f t equal to 5 ,000 divided by 1 plus 60e power minus 0 .40.
00:45
In first part we have asked that approximately how many people will have heard the news after 7 days.
00:52
So just put t equal to 7.
00:55
Just put t equal to 7.
00:58
We have to find f of 7 that is 5.
01:01
5 ,000 divided by 1 plus 60 e power minus 0 .4 into 7.
01:08
After solving this we are getting nearly 1075 .592...