# Is this a differential equation and what do I need to be able to

1. Mar 3, 2013

### ZeeshanParvez

Are the equations listed below differential equations?

If so, to understand them what level of calculus do I need? I only did alegbra 2 in high school.

Δ Wi = η * (D-Y).Ii
I(n,EF)=OF(n,EF)*I(n-1,EF)
I(1,EF)=OF(1,EF)

2. Mar 3, 2013

### micromass

Staff Emeritus
Please give more information. What are the variables involved? Where did you first encounter this equation? What book: title, author, page??

3. Mar 6, 2013

### jackmell

You're putting the cart way before the horse and your notation is illegble too. And I don't blame you for wanting to know about differential equations since through them lie the secrets to the Universe. But you have to approach this in the correct sequence: You have to master Calculus first so take four semesters of it using a big fat text book and work all the problems and do strive to write your math perfect in every detail so there's no ambiguity about what is being said. Then take an introduction into DEs and do the same: do all the problems and improve your writing style. Always, always strive to write your math perfect and beautiful and then begin to understand how the world really works through DEs. And when you've studied them for a while, remember me asking you how the following equation might model the creation of a Universe:

$$\frac{dx}{dt}=ax^3+bx+c$$

Last edited: Mar 6, 2013
4. Mar 6, 2013

### MostlyHarmless

I'm currently taking my first DE class, and yes it is fascinating, but take heed friend. Remember EVERYTHING!! As soon as you forget it, it shows up in trying to solve a differential equations. I've had homework problems that have one line of calculus and half a page of algebra.

5. Mar 6, 2013

### Integral

Staff Emeritus
Differential equations are the building, calculus is the hammer, algebra the nails.

6. Mar 6, 2013

Love it.