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