64 lines
631 B
Plaintext
64 lines
631 B
Plaintext
ans
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17465
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$\{-1,1\}$
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17466
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$\dfrac{\sqrt{2}}{2}$
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17467
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$(-\infty,-3]\cup (1,+\infty)$
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17468
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$-\dfrac{1}{8}$
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17469
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$\pi$
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17470
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$x=4$
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17471
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$28$
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17472
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$8.5$
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17473
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$(-3,+\infty)$
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17474
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$95.5$
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17475
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$(-4,0)cup \{2\sqrt{2}-2\}$
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17476
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$1518.5$
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17477
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A
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17478
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D
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17479
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B
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17480
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B
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17481
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(1) $a_n=n$, $b_n=2^{n-1}$; (2) 证明略
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17482
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(1) $\dfrac{\pi}{4}$; (2) $\dfrac{\sqrt{3}}{3}$
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17483
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(1) $y=27\times (\dfrac{4}{3})^x$, $x\ge 0$; (2) $9$分钟
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17484
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(1) $6$; (2) $-4$; (3) $(2,0)$或$(-\dfrac{2}{7},-\dfrac{12}{7})$
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17485
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(1) 证明略; (2) $\dfrac{\mathrm{e}}{2}$; (3) $(-\dfrac{27}{\mathrm{e}^3},0)\cup (0,+\infty)$
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