指数函数求值域专题
1.函数![](https://wkrtcs.bdimg.com/rtcs/image?w=132.00&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_4","w":"132.00","h":"24.00","dataType":"gif","c":"word/media/image1.gif"})
的值域为（ ）
A.（0，+∞） B．（1，9] C．（0，1） D．[9，+∞）
2.函数![](https://wkrtcs.bdimg.com/rtcs/image?w=98.67&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_5","w":"98.67","h":"69.33","dataType":"gif","c":"word/media/image2.gif"})
的值域是（ ）
A. R B.（0，+∞） C.（2，+∞） D. [![](https://wkrtcs.bdimg.com/rtcs/image?w=16.00&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_5","w":"16.00","h":"41.33","dataType":"gif","c":"word/media/image3.gif"})
，+∞）
3.求值域![](https://wkrtcs.bdimg.com/rtcs/image?w=76.00&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_6","w":"76.00","h":"28.00","dataType":"gif","c":"word/media/image4.gif"})
4.求值域![](https://wkrtcs.bdimg.com/rtcs/image?w=54.67&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_8","w":"54.67","h":"34.67","dataType":"gif","c":"word/media/image5.gif"})
5.求值域![](https://wkrtcs.bdimg.com/rtcs/image?w=90.67&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_6","w":"90.67","h":"50.67","dataType":"gif","c":"word/media/image6.gif"})
6.求值域![](https://wkrtcs.bdimg.com/rtcs/image?w=101.33&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_6","w":"101.33","h":"24.00","dataType":"gif","c":"word/media/image7.gif"})
7.已知函数![](https://wkrtcs.bdimg.com/rtcs/image?w=186.67&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_5","w":"186.67","h":"44.00","dataType":"gif","c":"word/media/image8.gif"})
求的定义域和值域
8.求![](https://wkrtcs.bdimg.com/rtcs/image?w=166.67&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_6","w":"166.67","h":"24.00","dataType":"gif","c":"word/media/image10.gif"})
9.求函数![](https://wkrtcs.bdimg.com/rtcs/image?w=172.00&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_5","w":"172.00","h":"50.67","dataType":"gif","c":"word/media/image11.gif"})
的值域
10.若![](https://wkrtcs.bdimg.com/rtcs/image?w=110.67&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_5","w":"110.67","h":"41.33","dataType":"gif","c":"word/media/image12.gif"})
为奇函数，求常数的值及的值域.
1.B 2.D
3. ![](https://wkrtcs.bdimg.com/rtcs/image?w=30.67&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_5","w":"30.67","h":"22.67","dataType":"gif","c":"word/media/image14.gif"})
4. 5. 6. 7.定义域：值域
8. ![](https://wkrtcs.bdimg.com/rtcs/image?w=44.00&md5sum=4753964aa71e923b3fd210a2179c1d86&sign=c9e8b4394c&rtcs_flag=2&rtcs_ver=3.2&l=webapp&bucketNum=90&ipr={"t":"img","r":"r_5","w":"44.00","h":"22.67","dataType":"gif","c":"word/media/image20.gif"})
9. 10. ,
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