错!∵f(x)是x的k阶无穷小,因此：lim(x→0)f(x)/x^k=C1(常数)同理：lim(x→0)g(x)/x^k=C2(常数)则：lim(x→0)f(x)/g(x)=lim(x→0)C1x^k/C2x^k=C1/C2∵C1/C2不一定等于1因此,f(x)与g(x)一定是同阶无穷小,但不一定是等价无穷小
