Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. ’²
2. â
3. ‹æ
4. ŒN

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ