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