57 lines
820 B
Plaintext
57 lines
820 B
Plaintext
ans
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023640
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$y'=0$
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019063
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$y'=k$
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040772
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$2\mathrm{i}$
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040773
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$\{-4+3\mathrm{i}\}$
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040774
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$\pm\sqrt{2}\mathrm{i}$
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040776
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$-59$
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040777
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$\dfrac{6}{5}+\dfrac{2}{5}\mathrm{i}$
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040778
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$\cos 280^\circ+\mathrm{i}\sin 280^\circ$
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040779
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$-1-\sqrt{2}$
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040780
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$4+4\sqrt{3}\mathrm{i}$
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040781
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D
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040783
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A
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040784
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A
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040785
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(1) $190^\circ$; (2) $\theta-\dfrac{3\pi}{2}$; (3) $\dfrac{11}{6}\pi$; (4) $\pi+\arctan\dfrac{4}{5}$
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040786
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$\mathrm{i}$, $-\mathrm{i}$, $\dfrac{\sqrt{3}}{2}+\dfrac{1}{2}\mathrm{i}$, $-\dfrac{\sqrt{3}}{2}+\dfrac{1}{2}\mathrm{i}$, $\dfrac{\sqrt{3}}{2}-\dfrac{1}{2}\mathrm{i}$, $-\dfrac{\sqrt{3}}{2}-\dfrac{1}{2}\mathrm{i}$
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040787
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$\dfrac{1}{4}$或$\dfrac{7}{4}$
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040789
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$g(m)=\begin{cases}2\sqrt{9-m}, & m\le 0,\\ 6, & 0\le m\le 9, \\ 2\sqrt{m}, & m\ge 9\end{cases}$
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040790
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$-2$或$-1\pm \sqrt{5}$
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