Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1.
–û
2.
d
3.
â
4.
Ԥ
ƒŒƒxƒ‹3.
•ÏX
SDAL“‡‰pŒêŠwZ