lim x→2 √(x^2+5)-3/x^2-4 求极限_数学解答

lim x→2 √(x^2+5)-3/x^2-4 求极限

人气：463 ℃　时间：2020-02-04 10:04:13

解答

f(b)-f(a)=f'(ζ)(b-a), where a<ζit's the lagrange mean-value theorem by taking f(x)=√x and f'(ζ)=1/(2√ζ)