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絶対値記号を含む関数
f(-2) | = | | (-2) - 2 | | = | | -4 | | = | 4
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f(0) | = | | 0 - 2 | | = | | -2 | | = | 2
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f(2) | = | | 2 - 2 | | = | | 0 | | = | 0
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f(4) | = | | 4 - 2 | | = | | 2 | | = | 2
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f(-2) | = | | (-2)2 - 1 | | = | | 4 - 1 | | = | 3
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f(-1) | = | | (-1)2 - 1 | | = | | 1 - 1 | | = | 0
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f(0) | = | | 02 - 1 | | = | | 0 - 1 | | = | 1
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f(1) | = | | 12 - 1 | | = | | 1 - 1 | | = | 0
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f(2) | = | | 22 - 1 | | = | | 4 - 1 | | = | 3
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- 例 3: f(x) = | x - 2 | + | x + 1 |
f(-2) | = | | (-2) - 2 | | + | (-2) + 1 | | = | 4 + 1 | = | 5
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f(-1) | = | | (-1) - 2 | | + | (-1) + 1 | | = | 3 + 0 | = | 3
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f(0) | = | | 0 - 2 | | + | 0 + 1 | | = | 2 + 1 | = | 3
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f(1) | = | | 1 - 2 | | + | 1 + 1 | | = | 1 + 2 | = | 3
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f(2) | = | | 2 - 2 | | + | 2 + 1 | | = | 0 + 3 | = | 3
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f(3) | = | | 3 - 2 | | + | 3 + 1 | | = | 1 + 4 | = | 5
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