Viewing posts for the category math

You and a friend are imprisoned but have a chance for freedom. To earn it, you must walk alone into a separate room where a chess board is laid out with a coin per square randomly showing heads or tails. You are shown a particular square on the chess board, and are then allowed to touch one coin to flip it. Then you must leave without making any contact with your friend. Your friend enters the room and must pick the square which was pointed out to you. You and your friend may discuss a strategy before you enter the room.

Functions are easily thought of as a way of matching up numbers from one set with numbers of another. The function f(x) = x+3, for example, is just a way of saying that I'm matching up the number 1 with the number 4, the number 2 with the number 5, etc. A different example would be the absolute value function which matches both -4 and +4 to the number +4. Think of functions as matchmakers.

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- How to make iterators out of Python functions without using yield
- How to globally customize exception stack traces in Python
- Is your tango embrace really too firm or too relaxed?

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