17 lines
690 B
Scheme
17 lines
690 B
Scheme
;; The first three lines of this file were inserted by DrScheme. They record metadata
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;; about the language level of this file in a form that our tools can easily process.
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#reader(lib "htdp-beginner-reader.ss" "lang")((modname graphing) (read-case-sensitive #t) (teachpacks ()) (htdp-settings #(#t constructor repeating-decimal #f #t none #f ())))
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(require htdp/graphing)
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(define (fun1 x) (+ (* x x) 1))
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(check-expect (graph-fun fun1 'red) true)
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(define (fun2 x) (+ (* -1 x x) 1))
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(check-expect (graph-fun fun2 'blue) true)
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(define (line1 x) (+ (* +1 x) 10))
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(check-expect (graph-line line1 'black) true)
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(define (line2 x) (+ (* -1 x) 10))
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(check-expect (graph-line line2 'green) true)
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