Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1.
2. â
3. ‰¡
4. –½

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ