Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. ˆ«
2. â
3. ˆã
4. •Ô

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ