Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. Žæ
2. â
3. ‰®
4. ܠ

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ