本课配套习题挑战模式1/5
单选题
难度系数:
1.函数y=f(x)的图象如图所示,其增区间是( )
A: |
B: [-4,-3]∪[1,4] |
C: [-3,1] |
D: [-3,4] |
一次做对,真牛!
+5奖励规则>
- 提示1:IOinguWvn+WbvuWDj++8jOWHveaVsOWcqFvvvI0zLDFd5Yy66Ze05LiK5ZGI5LiK5Y2H6LaL5Yq/77yB
- 答案:Qw==
6Kej5p6Q77ya6KeC5a+f5Zu+5YOP77yM5Ye95pWw5ZyoW++8jTMsMV3ljLrpl7TkuIrlkYjkuIrljYfotovlir/vvIHmlYXov5nkuKrljLrpl7TmmK/ljZXosIPlop7ljLrpl7TjgII=
本课配套习题挑战模式2/5
单选题
难度系数:
2.函数y=(3k+1)x+b在R上是减函数,k的取值范围是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOS4gOasoeWHveaVsOaYr+WHj+WHveaVsO+8jOWImTxpbWcgd2lkdGg9OCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9DRi9BOS9yQkFDRTFQdHUxdng4elZFQUFBQkVwdWNBLXcyNDcucG5nIj7nmoTns7vmlbDmmK/otJ/mlbDvvIzmiYDku6U8aW1nIHdpZHRoPTY2IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzk4LzdGL3JCQUNGRlB0dTF1eGxCYzlBQUFCd21SNy1YYzc1NC5wbmciPg==
- 答案:QQ==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.函数y=-x2的单调减区间是( )
A: |
B: (-∞,0] |
C: (-∞,0) |
D: (-∞,+∞) |
一次做对,真牛!
+5奖励规则>
- 提示1:DQrnlLvlh7o8aT55PC9pPu+8ne+8jTxpPng8L2k+PHN1cD4yPC9zdXA+5ZyoPGI+UjwvYj7kuIrnmoTlm77osaHvvIzlj6/nn6Xlh73mlbDlnKhbMO+8jO+8i+KIninkuIrpgJLlh48uIDxicj4NCjxpbWcgd2lkdGg9OTggaGVpZ2h0PTg1IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOTgvODAvckJBQ0ZGUHR1M0hTN09MTEFBQUdpQlB5cGFZNzMyLnBuZyI+
- 答案:QQ==
6Kej5p6Q77ya55S75Ye6PGk+eTwvaT7vvJ3vvI08aT54PC9pPjxzdXA+Mjwvc3VwPuWcqDxiPlI8L2I+5LiK55qE5Zu+6LGh77yM5Y+v55+l5Ye95pWw5ZyoWzDvvIzvvIviiJ4p5LiK6YCS5YePLiA8YnI+PGltZyB3aWR0aD05OCBoZWlnaHQ9ODUgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC85OC84MC9yQkFDRkZQdHUzSFM3T0xMQUFBR2lCUHlwYVk3MzIucG5nIj4=
本课配套习题挑战模式4/5
单选题
难度系数:
4.函数的单调增区间是( )
A: [0,+∞) |
B: (-∞,0] |
C: (-∞,0),(0,+∞) |
D: (-∞,0)∪(0,+∞) |
一次做对,真牛!
+5奖励规则>
- 提示1:IOeUseS6juino+aekOW8j+S4reWHuueOsOS6hui0n+WPt++8jOaJgOS7peWHveaVsOeahOWbvuWDj+iusui/h+esrOS6jOWSjOesrOWbm+ixoemZkA==
- 答案:Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数:
5.若函数f(x)在区间(a,b)上是增函数,在区间(b,c)上也是增函数,
则函数f(x)在区间(a,b)∪(b,c)上( )
则函数f(x)在区间(a,b)∪(b,c)上( )
A: 增函数 |
B: 减函数 |
C: 增函数或减函数 |
D: 无法确定 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWmgjxpbWcgd2lkdGg9NjAgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvQUEvckJBQ0UxUHR1NGVoVkM0dEFBQUJ5RUpFbGR3MTU0LnBuZyI+5ZyoKDDvvIzvvIviiJ4p5LiK5piv5aKe5Ye95pWw77yM5ZyoKO+8jeKInu+8jDAp5LiK5Lmf5piv5aKe5Ye95pWw77yM5L2G5ZyoKO+8jeKInu+8jDAp4oiqKDDvvIzvvIviiJ4p5LiK5bm25LiN5YW35pyJ5Y2V6LCD5oCnLg==
- 答案:RA==
6Kej5p6Q77ya5aaCPGltZyB3aWR0aD02MCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9DRi9BQS9yQkFDRTFQdHU0ZWhWQzR0QUFBQnlFSkVsZHcxNTQucG5nIj7lnKgoMO+8jO+8i+KIninkuIrmmK/lop7lh73mlbDvvIzlnKgo77yN4oie77yMMCnkuIrkuZ/mmK/lop7lh73mlbDvvIzkvYblnKgo77yN4oie77yMMCniiKooMO+8jO+8i+KIninkuIrlubbkuI3lhbfmnInljZXosIPmgKcuIOaJgOS7peaXoOazleehruWumu+8gQ==