28 lines
703 B
Python
28 lines
703 B
Python
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import sys
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def integrate(f, a, b, n):
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"""The integral of f(x) for x between a and b.
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Aproximated using the trapezoidal rule with n uniform subintervals."""
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assert n >= 1
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return ((b - a) / 2 * n * (f(a) + sum(2 * f(a + (b - a) * i / n) for i in range(1, n)) + f(a + (b - a)))) / (n ** 2)
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def example(n):
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a = integrate(lambda x: (x - 2) / (x + 3), 0, 1, n)
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return a
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# You may define auxiliary functions here.
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# Do not change the code below!
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def evalPrint(expression):
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# Evaluate and print an expression and its result.
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result = eval(expression)
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print("{}\n--> {!r}".format(expression, result))
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if __name__ == "__main__":
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evalPrint(" ".join(sys.argv[1:]))
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