Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. ‰·
2. â
3. ‹´
4. –¡

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ