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