Each of us has _________ life goals, which will guide us to a bright future. Without life goals, we may waste our lifetime.
已知奇函数y=f(x),x>0g(x),x<0如果f(x)=ax(a>0且a≠1)对应的图象如图所示,那么g(x)=( )
已知A={锐角},B={第一象限角},C={小于90°的角},那么A,B,C的关系式( )