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require 'facets/math/beta'
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test_case Math do
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class_method :beta do
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test do
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Math.beta(1.0, 1.0).range(1.0e-6).assert === 1.0
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Math.beta(1.0, 2.0).range(1.0e-6).assert === 0.5
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Math.beta(1.0, 3.0).range(1.0e-6).assert === 1.0 / 3.0
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Math.beta(2.0, 1.0).range(1.0e-6).assert === 0.5
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Math.beta(2.0, 2.0).range(1.0e-6).assert === 1.0 / 6.0
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Math.beta(2.0, 3.0).range(1.0e-6).assert === 1.0 / 12.0
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Math.beta(3.0, 1.0).range(1.0e-6).assert === 1.0 / 3.0
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Math.beta(3.0, 2.0).range(1.0e-6).assert === 1.0 / 12.0
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Math.beta(3.0, 3.0).range(1.0e-6).assert === 1.0 / 30.0
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end
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end
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end
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