86 lines
811 B
Plaintext
86 lines
811 B
Plaintext
ans
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22106
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$1$
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22107
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$\pi$
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22108
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$(\dfrac{3}{5}, \frac{4}{5})$
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22109
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$-\dfrac{4}{5}$
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22110
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$-\dfrac{3}{5}+\dfrac{4}{5} \mathrm{i}$
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22111
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$(1, \dfrac{7}{3})$
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22112
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$-\dfrac{29}{48}$
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22113
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$y=-3 x+4$
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22114
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$2$
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22115
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$12$
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22116
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$[-2,2) \cup\{2 \sqrt{2}\}$
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22117
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$[-\sqrt{3}+1, \sqrt{3}+1]$
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22118
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A
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22119
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C
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22120
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C
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22121
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A
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22122
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(1) $\dfrac{\pi}{2}$; (2) $x-2y+\sqrt{5}+1=0$或$x-2y-\sqrt{5}+1=0$
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22123
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(1) $-1\pm \mathrm{i}$; (2) $\pm \sqrt{7}$或$\pm 3$
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22124
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(1) $\{x|x=k\pi \text{或}-\dfrac{\pi}{4}+k\pi, \ k\in \mathbf{Z}\}$; (2) $[\dfrac{3\pi}{8}+k\pi,\dfrac{7\pi}{8}+k\pi ]$, $k\in \mathbf{Z}$
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22125
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(1) $2$; (2) 值为$4$, 证明略; (3) $-2$
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22126
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(1) $Q_1(2,1)$, $P_2(0,1)$; (2) 存在, $k=0$, $t=0$, 证明略; (3) $f(z)=\dfrac{z-1}{z+1}$满足题意, 证明略
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