• Support PF! Buy your school textbooks, materials and every day products Here!

Help differential equations anyone?

1. Homework Statement

Differential equation: dx/dt = 1000 + 0.10x
x(0) = 1000
Solve the initial value problem for x as a function of t

Section of Exponential/Logistic growth; applications (population growth) ---- Intro-level calculus


2. Homework Equations

Answer: x = 11000e^(0.1t) - 10,000

3. The Attempt at a Solution

Sorry could you help me how this answer (found at the end of the book) is gotten? Sorry but I do not know how to do it; please help. ^^
 
Last edited:
2,035
2
Separate the variables.
 

HallsofIvy

Science Advisor
Homework Helper
41,728
881
Have you tried actually reading the book? I don't mean to be harsh but there are several different ways to solve this equation and I don't know which one you are to learn at this point in your course. If you are at the beginning of the course then probably the simplest thing to do is what neutrino suggested: separate variables.
From [tex]\frac{dx}{dt}= 1000- 0.10x[/tex] you can easily get
[tex]\frac{dx}{1000- 0.10x}= dt[/tex] and integrate.
 
hah stupid of me thx. for your help.
 

Related Threads for: Help differential equations anyone?

Replies
2
Views
471
  • Last Post
Replies
13
Views
1K
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
5
Views
950
  • Last Post
Replies
0
Views
891
Replies
5
Views
4K
Top