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