Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. ‰×
2. Žó
3. `
4. â

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ