# Graph using Maple for Astronomy

1. Sep 27, 2011

### I Am Robot

1. The problem statement, all variables and given/known data

I am not sure what to do with Maple. I've barely used it at all, but trying to figure out why this won't work with what I have below.

Plot schematically the change in equilibrium temperature of Earth, if its albedo changes from 0.3 to 0.7 (in 0.1 jumps).

2. Relevant equations

$\frac{L(1-a)R^2}{4d^2}$

3. The attempt at a solution

(This assignment is old btw, just wanted to figure out what I did wrong.)

When I right click on the equation and select plot it assigns my already assigned variables as unknowns between -5 and 5. Really not sure what to do?

[PLAIN]http://img838.imageshack.us/img838/4474/maplef.jpg [Broken]

Did I improperly assign the variables or perhaps the function?

Last edited by a moderator: May 5, 2017
2. Sep 28, 2011