Referenced from lesson Solving Word Problems

We’ve provided contracts and purpose statements to describe two different functions. Write examples for each of those functions.

Directions: half-image

Contract and Purpose Statement

Every contract has three parts…​

; half-image: String->Image

; Consumes the url for an image, and produces that image scaled to half its size.

Examples

Write some examples, then circle and label what changes…​

(EXAMPLE (__________ ____________________________________) _____________________________________________________________)

(EXAMPLE (__________ _____________________________________) ______________________________________________________________)

Definition

Write the definition, giving variable names to all your input values…​

(define (__________ ____)

_____________________________)

Directions: triple

Contract and Purpose Statement

Every contract has three parts…​

; triple: Number->Number

; Consumes a Number and triples it.

Examples

Write some examples, then circle and label what changes…​

(EXAMPLE (______ __)________)

(EXAMPLE (______ ___)_________)

Definition

Write the definition, giving variable names to all your input values…​

(define (______ ____)

_________________)

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