Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1.
†
2.
â
3.
Ž
4.
‘¼
ƒŒƒxƒ‹3.
•ÏX
SDAL“‡‰pŒêŠwZ