Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. â
2. ˆÏ
3. •Ô
4. —V

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ