Homework Help: Maths

Posted by Alice on Friday, October 10, 2008 at 1:35pm.

A(t)=A'e^(-t/r)
where A(t) is the amount after time t, A' is the initial amount at t=0 and r is the decay time.

Give an interpretation of the parameter r.

Maths - drwls, Friday, October 10, 2008 at 7:38pm
r is the length of time required for the amount of A to decrease by a factor of 1/e

Answer this Question

Related Questions

Physics - A first order exponential decay can be written as A(t)= Ae^(-t/r) ...
calculus - Carbon-14 is a radioactive substance produced in the Earth's ...
compound interest - How do I solve these problems? Complete the table for a ...
Differential Equations - Model radioactive decay using the notation t = time (...
calculus - A fixed amount 15000 is invested in a tax-sheltered account at an ...
math - Initial Investment?? Annual % Rate= 8 Time to Double?? Amount after 10 ...
Math - D.E.Q. - The half-life of a radioactive isotope is the amount of time it ...
Chemistry - Isotopes - The isotope caesium 137 has a half life of 30 years. How ...
math - i have this question and im not sure how to do it i keep getting stuck ...
hard math question - When a certain drug enters the blood stream, its potency ...

For Further Reading

First Name:
School Subject:
Answer: