66 lines
572 B
Plaintext
66 lines
572 B
Plaintext
ans
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40605
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$6$
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40606
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$90$
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40607
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$10$
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40608
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$15$
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40609
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$24$
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40610
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$(0,\dfrac{9\sqrt{2}-2}4]$
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40611
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$540$
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40612
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$\dfrac{16\pi}3$
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40613
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$35$
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40614
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\textcircled{2}\textcircled{4}
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40615
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$[6,+\infty)$
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40616
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$\log_2 \mathrm{e}$
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40617
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C
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40618
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A
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40619
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D
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40620
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B
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40621
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(1) $\dfrac{\sqrt{10}}{10}$; (2) $\dfrac{3\sqrt{5}}{5}$
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40622
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(1) $80$; (2) $1$或$-3$
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40623
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(1) $\pm \sqrt{3}$; (2) 存在, 点$M$的坐标为$(-3,0)$
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40624
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(1) $\dfrac{x^2}4+y^2=1$; (2) $k=\pm 2$; (3) 定值为$\dfrac 23$, 证明略
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40625
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(1) $y=-2$; (2) $k=0$或$4$; (3) $\dfrac 34-\ln 2$
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