Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. ‹´
2. â
3. ˆÃ
4. ’Ç

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ