C3 Differentiation Rates Question
With Q5 part b,
I was just wondering why we can't use N = 36,000 as that is twice the bacteria than there was at time t=3?
I was just wondering why we can't use N = 36,000 as that is twice the bacteria than there was at time t=3?
Original post by Saywhatyoumean
With Q5 part b,
I was just wondering why we can't use N = 36,000 as that is twice the bacteria than there was at time t=3?
I was just wondering why we can't use N = 36,000 as that is twice the bacteria than there was at time t=3?
You can, provided that you subtract 3 from the time you get, in order to find out how long it took.
Original post by tiny hobbit
You can, provided that you subtract 3 from the time you get, in order to find out how long it took.
with that I didn't get the right answer?
k=1/3ln9 which is correct,
so 36000 = 2000e ^ 1/3ln9 t
18 = e^ 1/3ln9 t
e^ 1/3ln9 = 2.08
t is therefore 18/2.08 = 8.65
8.65 - 3 = 5.65 which is wrong?
(edited 9 years ago)
Original post by Saywhatyoumean
with that I didn't get the right answer?
k=1/3ln9 which is correct,
so 36000 = 2000e ^ 1/3ln9 t
18 = e^ 1/3ln9 t
e^ 1/3ln9 = 2.08
t is therefore 18/2.08 = 8.65
8.65 - 3 = 5.65 which is wrong?
k=1/3ln9 which is correct,
so 36000 = 2000e ^ 1/3ln9 t
18 = e^ 1/3ln9 t
e^ 1/3ln9 = 2.08
t is therefore 18/2.08 = 8.65
8.65 - 3 = 5.65 which is wrong?
Your algebra went wrong at line 3. It should be 1/3ln9 t = ln 18
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