81215:oo

-

15s145

nde

81216:3o

-2ndround

13s335131517

nde

81311:3o

-3rdround

17s3351213

nde

[]

81315:oo

-

1o15

ndende

[]

81319:oo

-2ndround

5123o125l

ndende

[]

81322:oo

[s]

t=-ax+b

[]

8149:3o

[]

81419:oo

r2

casio

t=-ax+b

[]

t=-ax2+b

[]

t=-a（x-c）2+b

[]

t（s）=-1o68（x-7）2+br2=o982b

[]

8151o:oo

-

nde

3os16

nde