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 已知函数6ec8aac122bd4f6e对于任何实数6ec8aac122bd4f6e都满足条件6ec8aac122bd4f6e,若6ec8aac122bd4f6e,则6ec8aac122bd4f6e=                

 

 若6ec8aac122bd4f6e是奇函数,则实数6ec8aac122bd4f6e          

 

 已知关于6ec8aac122bd4f6e的不等式6ec8aac122bd4f6e<0的解集6ec8aac122bd4f6e,则实数6ec8aac122bd4f6e        

 

 已知集合6ec8aac122bd4f6e,且A∪B=R,则实数6ec8aac122bd4f6e的取值范围是      

                  

 

 如图,测量河对岸的塔高6ec8aac122bd4f6e时,可以选与塔底6ec8aac122bd4f6e在同一水平面内的两个侧点6ec8aac122bd4f6e6ec8aac122bd4f6e.现测得6ec8aac122bd4f6e,并在点6ec8aac122bd4f6e测得塔顶6ec8aac122bd4f6e的仰角为6ec8aac122bd4f6e,则塔高6ec8aac122bd4f6e=_________________.

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 若数列6ec8aac122bd4f6e满足6ec8aac122bd4f6e,且6ec8aac122bd4f6e,则通项6ec8aac122bd4f6e________________.

 

 已知等差数列6ec8aac122bd4f6e的首项6ec8aac122bd4f6e,公差6ec8aac122bd4f6e,则前6ec8aac122bd4f6e项和6ec8aac122bd4f6e_________________,当6ec8aac122bd4f6e=________________时,6ec8aac122bd4f6e的值最小.

 

 在6ec8aac122bd4f6e中,6ec8aac122bd4f6e,则6ec8aac122bd4f6e_______________.

 

 不等式6ec8aac122bd4f6e的解集为________________.

 

 已知数列6ec8aac122bd4f6e满足:6ec8aac122bd4f6e    

 

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