# lines - -- CIS 252, Homework 3-- -- Name: FILL-IN-- Email:

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Unformatted text preview: -- CIS 252, Homework 3-- -- Name: FILL-IN-- Email: FILL-IN------------------------------------------------------------------------------------------------------------------------------------------------ Problem 1------------------------------------------------------------------------- CONTRACT onLine :: (Float,Float) -&gt; Float -&gt; Float -&gt; Float -&gt; Bool-- PURPOSE-- onLine (x1,y1) a b c -- tests whether (x1,y1) is on the line ax+by+c=0.-- EXAMPLES-- (onLine (1,1) 1 1 0) should return False-- (onLine (-1,-1) 1 1 2) should return True-- ****ADD MORE****-- DEFINITION onLine (x,y) a b c = False -- &lt;&lt;&lt;&lt;&lt; CHANGE THIS &lt;&lt;&lt;&lt;&lt;-- TESTS t1a = onLine (1,1) 1 1 0 -- should be False t1b = onLine (-1,-1) 1 1 2 -- should be True t1c = onLine (2,5) (-2) 1 (-1) -- should be True -- ****ADD MORE****------------------------------------------------------------------------------------------------------------------------------------------------ Problem 2------------------------------------------------------------------------- CONTRACT degenerate :: Float -&gt; Float -&gt; Float -&gt; Bool-- PURPOSE-- degenerate a b c -- tests whether the line ax+by+c=0 is degenerate-- EXAMPLES-- (degenerate 0 0 1) should return True-- (degenerate 1 1 0) should return False-- ****ADD MORE****-- DEFINITION degenerate a b c = False -- &lt;&lt;&lt;&lt;&lt; CHANGE THIS &lt;&lt;&lt;&lt;&lt;-- TESTS t2a = degenerate 0 0 1 -- should be True t2b = degenerate 1 1 0 -- should be False-- ****ADD MORE****-------------------------------------------------------------------------------------------------------------------------------------------------- Problem 3-------------------------------------------------------------------------- CONTRACT horizontal :: Float -&gt; Float -&gt; Float -&gt; Bool-- PURPOSE-- horizontal a b c -- tests whether the line ax+by+c=0 is horizontal....
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## This note was uploaded on 02/14/2011 for the course CIS 252 taught by Professor Staff during the Spring '08 term at Syracuse.

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lines - -- CIS 252, Homework 3-- -- Name: FILL-IN-- Email:

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