Dr Racket place-image not working -


i wrote simple code in dr-racket , not working. here code:

(place-image (circle 5 "solid" "green") 50 80 (empty-scene 100 100))

i have selected bsl language compiling giving me following error:

place-image: function not defined

what going wrong?

thank in advance.

if you're following recent versions of dr. racket , "how design programs, second edition", should add following top of code:

(require 2htdp/image)

the end result following:

#lang racket (require 2htdp/image) (place-image (circle 5 "solid" "green") 50 80 (empty-scene 100 100))

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