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