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| if XYZ>XY or XYZ>XZ or XYZ>YZ or XY>X or XY>Y or XZ>X or XZ>Z or YZ>Y or YZ>Z or C<0: print 'This situation is impossible!' if XYZ > XY: print 'The number of people who run, bike, and swim cannot be greater than the number of people who run and bike! (Why?)' if XYZ > XZ: print 'The number of people who run, bike, and swim cannot be greater than the number of people who run and swim! (Why?)' if XYZ > YZ: print 'The number of people who run, bike, and swim cannot be greater than the number of people who bike and swim! (Why?)' if XY > X: print 'The number of people who run and bike cannot be greater than the number of people who run! (Why?)' if XY > Y: print 'The number of people who run and bike cannot be greater than the number of people who bike! (Why?)' if XZ > X: print 'The number of people who run and swim cannot be greater than the number of people who run! (Why?)' if XZ > Z: print 'The number of people who run and swim cannot be greater than the number of people who swim! (Why?)' if YZ > Y: print 'The number of people who bike and swim cannot be greater than the number of people who bike! (Why?)' if YZ > Z: print 'The number of people who bike and swim cannot be greater than the number of people who swim! (Why?)' if C<0: print 'You have indicated too many people! The number of people exceeds the number of people surveyed. (Why?)' |
if XYZ>XY or XYZ>XZ or XYZ>YZ or XY>X or XY>Y or XZ>X or XZ>Z or YZ>Y or YZ>Z or C<0 or XYZ<0 or XZ<0 or YZ<0 or XY<0 or X<0 or Y<0 or Z<0: print 'This situation is impossible! (Why?)' |
Sage Interactions - Miscellaneous
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Contents
Hearing a trigonometric identity
by Marshall Hampton. When the two frequencies are well separated, we hear the right hand side of the identity. When they start getting close, we hear the higher-pitched factor in the left-hand side modulated by the lower-pitched envelope.
Karplus-Strong algorithm for plucked and percussive sound generation
by Marshall Hampton
An Interactive Venn Diagram
Unreadable code
by Igor Tolkov
Profile a snippet of code
Evaluate a bit of code in a given system
by William Stein (there is no way yet to make the text box big):
Minkowski Sum
by Marshall Hampton
Cellular Automata
by Pablo Angulo, Eviatar Bach
Another Interactive Venn Diagram
by Jane Long (adapted from http://wiki.sagemath.org/interact/misc)
This interact models a problem in which a certain number of people are surveyed to see if they participate in three different activities (running, biking, and swimming). Users can indicate the numbers of people in each category, from 0 to 100. Returns a graphic of a labeled Venn diagram with the number of people in each region. Returns an explanatory error message if user input is inconsistent.
