Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1.
ӧ
2.
â
3.
•‰
4.
”{
ƒŒƒxƒ‹3.
•ÏX
SDAL“‡‰pŒêŠwZ