解题方法
1 . 甲、乙两同学玩掷股子游戏,规则如下:
(1)甲、乙各抛掷质地均匀的殿子一次,甲得到的点数为
,乙得到的点数为
;
(2)若
的值能使二项式
的展开式中只有第4项的二项式系数最大,则甲胜,否则乙胜.那么甲胜的概率为______ .
(1)甲、乙各抛掷质地均匀的殿子一次,甲得到的点数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c44826e58f11a58d3a6c233fc5df2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215b1424b299b737554386b090af8316.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a792f3fc41e5add4e8d2de767d79f3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42537d82ba36734bff1d663dd0b1bf49.png)
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解题方法
2 . 在
中,内角A,B,C的对边分别为a,b,c,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3954687a671d687f5e67209b29f9289.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9860d8ae67130297c3b7ccde6109ad96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3954687a671d687f5e67209b29f9289.png)
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3 . 设函数
对任意的
均满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae75304062219d4e8df91047fe6e6fa6.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de397f5d886b06f719b6ae246019a16d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f171285d78b936149a0526bfbc12169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b47144278d622b666fcff69aee5abc5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae75304062219d4e8df91047fe6e6fa6.png)
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解题方法
4 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32e1cc0922dfd919f8ec8831da2cee5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21eaad57905e77afbd2769ffe4fd490c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32e1cc0922dfd919f8ec8831da2cee5.png)
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5 . 已知
,且
,
,
,则方程
的解的组数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d8b10aef20e2e5f84fa1564f4466b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a583e1950f97c1c88fc322421fd1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243f6f480bdd32cd1890e74eafb2a51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b96e1fca59d37103e073ae9b7d4177.png)
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解题方法
6 . 已知直线
与曲线
和
都相切,倾斜角为α,直线
与曲线
和
都相切,倾斜角为β,则
取最小时,实数a的值为__________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceb23a0b364f57c24ef0cf2fa1612a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01fbe68bc39206e5eee8afa7c15077ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceb23a0b364f57c24ef0cf2fa1612a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01fbe68bc39206e5eee8afa7c15077ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc42b556ad93ff83b8d6464cd9914685.png)
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7 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33fb63dc8d4741414cf5a262be0c712a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c54f408d1dc7ba6bd0b0c0d1e362357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33fb63dc8d4741414cf5a262be0c712a.png)
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8 . 曲线
在点
处的切线方程为______ ;若当
时,
恒成立,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a055e57ab673eefa580064484efb6f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29343388ca8b33dc98325e65382b38a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7329ba10212286a83bffb9bb24353423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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9 . 一个乒乓球从
高的桌面上落下,每次反弹的高度都是原来高度的
,则乒乓球至少在第______ 次着地时,它所经过的总路程会超过
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b249c222293a0df29234b4e983ceb11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290b233ee2c0b377fe0154cd8887d347.png)
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解题方法
10 . 今天是星期四,那么
天后是星期______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6de6844746541b0da6b8b69d0f342a2.png)
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