ๅ
40 ้้ขๆฐ
f(x)=โax-2-1 (a>0,
22)
2 ใจใใใจใ,ๆฌกใฎๅใใซ็ญใใ.
(1) y=f(x) ใฎ้้ขๆฐ y=f(x) ใๆฑใใ.
(2) ๆฒ็ท City=f(x) ใจๆฒ็ท C2:y=f(x) ใ็ฐใชใ2็นใงไบคใใ
ใใใชฮฑใฎๅคใฎ็ฏๅฒใๆฑใใ.
(3) C1, C2 ใฎไบค็นใฎxๅบงๆจใฎๅทฎใ2ใงใใใจใ, ฮฑใฎๅคใๆฑใใ.