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1 . 袋中有红、黄、蓝三种颜色的小球共10个(其中有5个红球),若从中一次取出3个小球,记恰有1只黄球的概率为
,则
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2 . 已知函数
若
,则实数a的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c097f33321a429ccef2603bafefdade4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a740ea7ce1c79a7e35325d832ea36ce.png)
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3 . 若幂函数
的图象经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff82fccbaa3784b491d8484a57468de.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89813b958012156f03283a0a01643c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76806f6d863869204078084f51830cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff82fccbaa3784b491d8484a57468de.png)
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4 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800873ce02ed63eda88ea3976d1a17e3.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f346995b45341dad7e7c8edfbcac6a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800873ce02ed63eda88ea3976d1a17e3.png)
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5 . 已知
,
是第四象限角,则
的值为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d57444ead804245890b18f4b8a2b4e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87a846fe363e4ae184c75f759b29c75.png)
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6 . 已知
,则不等式
的解集是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a32951e48e0cf81290da5295df26243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba4e0a1adebbea0ebf7f2847650eff2.png)
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7 .
的展开式中
的系数为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5857a1d2ebdd524141e313e252fa093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8aa5b4bb6d88fef68f3eeaa328df64.png)
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8 . 在三棱锥
中,
平面
,
,
,
,
分别是棱
,
,
的中点,
,
,则直线
与平面
所成角的余弦值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
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9 . 在
中,
,
是
上的一点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f381b0b52ba24569a5d81183fa0e29db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
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10 . 已知四棱柱
的底面是正方形,
,
,点
在底面
的射影为
中点H,则直线
与平面
所成角的正弦值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd7e3b114896f000678d4ff3f580e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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