Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. â
2. ‹ï
3. ˆù
4. ‘°

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ