Question

x趋于0,f(x)/x^3的极限为-3,求x趋于0时,f(x)/x和f(x)/x^2的极限

Answer 1

f(x)/x^2=f(x)/x^3×x,所以x→0时,f(x)/x^2的极限是-3×0=0,

f(x)/x=f(x)/x^3×x^2,所以x→0时,f(x)/x的极限是-3×0=0.