Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. “™
2. ŠK
3. â
4. —R

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ