51 lines
350 B
Plaintext
51 lines
350 B
Plaintext
ans
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22127
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$1$
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22128
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$\mathrm{e}^x+x\mathrm{e}^x$
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22129
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$k\pi+\dfrac{\pi}{4}$, $k\in \mathbf{Z}$
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22130
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$x=2$
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22131
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$x^2-2x+2y^2-3=0$
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22132
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$12$
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22133
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$1$
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22134
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$[\dfrac{2}{3}\pi,\pi ]$
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22135
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$1$或$5$
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22136
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\textcircled{1}\textcircled{4}
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22137
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(1) 最大值为$6$, 最小值为$-48$; (2) $a=-4$
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22138
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$x^2+y^2-4x=0$($x\ne 0$)
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