Growth Definition and 327 Threads

If you injected human growth hormone, or something like that, into the brain, would it grow

My friend had to do this problem in Calculus BC. I'm no good at calculus, but I decided it was be fun for someone to figure it out for me. A bacteria culture starts with 500 bacteria and grows at a rate proportional to its size. After 3 hours there are 8000 bacteria. (a) Find an expression...

Hi, I have a question regarding natural growth and logistic models. According to my textbook, any exponential equations, P(t) = e^kt can be expressed logistically as P(t) = K/(1 + Ae^-kt) where A = (K-P0)/P0. When I applied this rule to P(t) = e ^0.0015t, and P(t) = 6000 / (1 + 5e^-0.0015t) it...

An embryo can increase its cell number without increasing its overall size.Is this because cell growth is actively inhibited?

Show log n < O(n^epsilon) for n sufficiently large. Not actually calculus, but it has something to do with limits, so there. :smile: Thanks, Mary

A bacteria culture starts with 300 bacteria and grows at a rate proportional to its size. After 3 hours, there are 9000 bacteria A.) Find an expression for the number of bacteria after t hours. for this part, i got 300*e^{1.133732*t} B.) Find the number of bacteria after 4 hours. well...

The population of the wolves influences the change in population of the mooses. When the population of the wolves increase, the mooses' population also increase. From the population growth formula of the wolves delta N/delta t = rN(K-N)/K which factor affects the population of the mooses...

Very interesting about the highly organized distribution of pirated material on the internet. http://www.wired.com/wired/archive/13.01/topsite.html http://www.cnn.com/2005/TECH/internet/01/03/online.underground.ap/index.html It is strange that the FBI have not been able to shut down the...

Hey, I was wondering if sit ups/curl ups and weight lifting stunt growth. Due to the amount of weight and muscle not allowing bones to grow any further. If so, does sitting down while lifting weights help?

Alright, my teacher the sadist gave us an assignment over the holidays, and so far, everyone in my class has gotten all but this. The equation is representative of the population growth of fish in a fish pond. p= m / 1+ae to the -kt p is the intial population, m the carrying capacity...

Hello, my problem is: Let Q(t) = 8(0.87)^t Find the annual and daily growth rate. Can anyone tell me how to set this up? I don't want you to show me the whole problem, just the 1st step. Thanks a ton!

Hi. Just a problem with diauxic growth. If there are glucose and lactose in a medium, the glucose will exhibit catabolic repression, inhibiting the syntheis of lactase. However when glucose is in scarce supply a microogranism will start making lactase. The problem is, when lactase hydrolyses...

can anyone show me how to solve this equation that represents the tumor growth ds/dt = - a s ln(bs) where a and b are constants

Does anyone know how to use the growth and decay functions? How would any of these be useful in everyday life?

Alright problem is pretty simple, I have two functions f(x) = n! g(x) = 2^n Question is to show that g(x) = Of(x) through mathematical expression that is show the growth rate of g(x) <= that of f(x) The fact that this is true is fairly obvious, it's bigger for n>3. Anyway my...

I have a question that says: Which of the following hormons are produced in the kidneys: Insulin, adrenaline, growthhormon, EPO or thyroxine ? Thanks again :D

anyone here know how algaecides control algae growth?specificity? any other methods on controlling algae growth would b greatly appreciated

There is a problem (the solution should use limit probability statements): One medical company invented some pills that should accelerate the growth of hair. The company wanted to try the pills on people - and so 2 groups of volunteers (each had 100 persons) were chosen to participate in the...

Papers in Loop Gravity and related research lines are coming out at an increasing rate. I've found this boolean search method useful at arxiv. It is a way of keeping up that takes less time since it combines the key words and phrases in a single search By searching arxiv with the same Boolean...

Hi Folks I am not sure if this is the right place to post please helep if you can : Plants, trees, corn etc. all grow upwards, that is in the oppsite direction of the local gravitational field (here disregarding the effect of the sunlight). If I grow say wheat on a spinning old fashion...

Hi Folks I posted this af astronomy and cosmology, but maybe it's more general ...: Plants, trees, corn etc. all grow upwards, that is in the oppsite direction of the local gravitational field (here disregarding the effect of the sunlight). If I grow say wheat on a spinning old fashion...

Hi Folks I am not sure if this is the right place to post but here it comes : Plants, trees, corn etc. all grow upwards, that is in the oppsite direction of the local gravitational field (here disregarding the effect of the sunlight). If I grow say wheat on a spinning old fashion record...

I'm not sure this belongs here, but I don't know where else to post it: On a handout from my Analysis of Algorithms class there's a "Hierarchy of Functions" chart which includes familiar orders such as log n, linear, n log n, quadratic, cubic, exponential, etc. There is one that I've...

Can anyone help me with a problem for my physics lab? We are studying capacitance and I'm not even sure what this problem has to do with it. I think you're supposed to use a log or ln, but I never had calculus, so I don't think you're supposed to do it that way. Any help would be appreciated...

Yeast (or only some strains?) can grow as an haploid or a diploid organism. 1. Why can it do both? 2. How do we induce it to grow in a haploid state?

Well, what do you expect the hipsters to drink when they put on their Levis and trucker hats and go to faux dive bars? The only thing that suprises me is that Major League Baseball hasn't yet benefited from the new classic American fad. eNtRopY

The following question is from a textbook..and I can't seem to solve it. Can someone help. --============================== The population of a midwestern city follows the exponential law. If the population decreased from 900,000 to 800,000 from 1993 to 1995, what will the population be in 1997?