# [racket] Rusty Math

The number would have to be complex, but sure you can do that:
>* (forn 0+10i)
*#t
Robby
On Sun, Dec 26, 2010 at 6:04 AM, Sayth Renshaw <flebber.crue at gmail.com> wrote:
>* I was doing an exmple and thinking about my expected retrun value to kow if
*>* my function worked.
*>*
*>* However I don't think any value could test true therefore my function would
*>* always be false. I do need to double check though as my math is rusty. But
*>* you cannot square a number and have it retun negative can you?
*>*
*>* This is my working.
*>*
*>* ;;; equation : number --> boolean
*>* ;;; to determine whether n is true for the equation (2 - n(squared) = 102)
*>* (define (forn x)
*>* (= (- 2 (* x x) ) 102))
*>*
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