Scratch

couldnt you do

<repeat( # power ) >
     <set{ variable   }to(  (( <{ variable   }> <*> 2  ))
<end>


I dont know alot about powers but i think you can do this.

Last edited by keroro645 (2008-11-18 23:08:27)

Fourex wrote:

I think that another block should be added to the numbers section. It it would multiply a number by its self a number of times. It could look something like:

([  ] ^ [  ])  <--that is means to look like a block

For example ([ 2 ] ^ [ 3 ]) would be equal to 8.

This would be pretty simple to implement, and would be useful to quite a few people.

Post your opinion?

Yes, I agree that there really should be a Raise to the Power function.  You can work around it though, using the existing blocks by noting that

          x^y = 10^ ( log(x) * y )

and they do give you the 10^ function and the log function in the drop-down functioon block.  So, using your previous example:
 
         2 ^ 3 = 10 ^ ( log(2) * 3) = 8

Fun with exponents and logarithms!

You can see this technique in action in this project here

http://scratch.mit.edu/projects/Paddle2SeeFixIt/292399

I tried making a power function last year, and failed miserably, lists might be able to help it, i don't know, but the 10^ could be used as a base (not the mathematical base) for logarithms.