Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. ŠJ
2. ˆ«
3. â
4. “S

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ