Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. •X
2. â
3. •Ô
4. —t

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ