Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. ˆç
2. •ž
3. â
4. •‰

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ