问题
填空题
若A={-2,2,3,4},B={x|x=t2,t∈A},用列举法表示B=______.
答案
由题,A={-2,2,3,4},B={x|x=t2,t∈A},
∴B={4,9,16},
故答案为{4,9,16}
若A={-2,2,3,4},B={x|x=t2,t∈A},用列举法表示B=______.
由题,A={-2,2,3,4},B={x|x=t2,t∈A},
∴B={4,9,16},
故答案为{4,9,16}