g=f1 (x>0), g=f2 (x<0)ใจใใฆใlim{xโโ} h-g = 0, lim{xโ-โ} h-g = 0ใจใชใใใใชใใๆใใฎๆปใใใช้ขๆฐhใๆขใใฆใพใ
Discussion
ๅคๅ ธ็ใชใฎใ ใจในใใฉใคใณๆฒ็ทใจใใใใใฉC^โ็ดใงๅคใใใใชใe^(x^2)ใไฝฟใใจใ