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