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