I was doing an exmple and thinking about my expected retrun value to kow if my function worked.<br><br>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?<br>
<br>This is my working.<br><br>;;; equation : number --> boolean<br>;;; to determine whether n is true for the equation (2 - n(squared) = 102)<br>(define (forn x)<br> (= (- 2 (* x x) ) 102))<br>