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