____ ____ it is snowing!
设全集U=R.若集合A={1,2,3,4},B={x|2≤x≤3} ,则A∩CuB=____ .
根据以上算法,可求得 f(−1)+f(2)= ____.
已知幂函数y=f(x)的图象过点(2,2),则f(9)=____