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