计算limx→0[(sinx)^2+(cosx)^2]^(2/x^2)ywhuvuh

Question

计算limx→0[(sinx)^2+(cosx)^2]^(2/x^2)
ywhuvuh

Answer 1

(sinx)^2+(cosx)^2=1
说以limx→0[(sinx)^2+(cosx)^2]^(2/x^2)=limx→0[1^(2/x^2)]=1