设集合A={x/(x+3)(2-x)}>=0,B={x/x^-4ax-(1-4a^)
问题描述:
设集合A={x/(x+3)(2-x)}>=0,B={x/x^-4ax-(1-4a^)
答
x/(x+3)(2-x)>=0 =>
1.x>0 and (x>-3 and x0