9 lines
137 B
Text
9 lines
137 B
Text
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/* fib(n) is built-in; here is an implementation */
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fib2(n) := (matrix([0, 1], [1, 1])^^n)[1, 2]$
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fib2(100)-fib(100);
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0
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fib2(-10);
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-55
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