# Number of Bacteria.

조회 수: 77(최근 30일)
Saumya Singh 2021년 8월 27일
답변: CHIRAG PATEL 2022년 1월 20일
. The number N of bacteria in a culture grew at a rate proportional to N. The value of N was initially 100 and increased to 332 in 1 hr. The governing equation is dN dt = log(3.32)N, N(0) = 100. What is the value of N at time t = 1.5 hr.

댓글을 달려면 로그인하십시오.

### 채택된 답변

Wan Ji 2021년 8월 27일
Here you can use symbolic solution
syms N(t) t
eq = diff(N)==log(3.32)*N
N = dsolve(eq,N(0)==100)
N_1dot5_hour = eval(subs(N,t,1.5))
Result becomes
N_1dot5_hour =
6.049327896551812e+02
So the value of N at time t = 1.5 hr is approximately 605.
##### 댓글 수: 1표시숨기기 없음
Image Analyst 2021년 8월 27일
@Saumya Singh some professors use plagiarism detectors so be careful about submitting Wan Ji's solution as your own original work for your homework. If you get caught, you could be in trouble.

댓글을 달려면 로그인하십시오.

### 추가 답변(1개)

CHIRAG PATEL 2022년 1월 20일
If the growth rate of a culture of bacteria is proportional to the number of bacteria present and after 1 day is 1.25 times the original number, within what interval of time will the number of bacteria (a) double, (b) triple?

댓글을 달려면 로그인하십시오.

### 범주

Find more on Morphological Operations in Help Center and File Exchange

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by