已知关于x的不等式(13)x-4＞3-2x，求该不等式的解集．_爱下问搜题

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问题解答题

已知关于x的不等式 (

1

3

)x-4＞3-2x，求该不等式的解集．

答案

∵(

1

3

)x-4＞3-2x，

∴3^4-x＞3^-2x，

∵y=3^x是一个递增函数，

∴4-x＞-2x，

∴x＞-4．

填空题

已知关于x的方程log₃（x-1）-k=0在区间[2，10]上有实数根，那么k的取值范围是______．

填空题

选词填空。

A another side B. any more C. its D. Both E. much too
F. as H. but I. one's J. thankful K. too much L. kill

      Sam had a dog. Its name was Tod. It was very helpful, but it ate 1.______So he didn't like it.  He
wanted to 2.______ Tod.  He tied Tod and put it in a small boat.
     He rowed (划) the boat to the 3.______of a big river.  Just as he 4.______the poor animal into the
river,  the boat began to go down.  5.______the man and Tod fell into the river.
     Tod was able to swim, 6.______Sam couldn't.  The dog bit ( 咬) the rope and broke it.  It tried
7.______best to swim to Sam.  The man was saved, so he was very 8.______to the dog, and he didn't
want to kill the dog 9.______. From then on, he gave the dog as much 10.______ it wanted.