1、y1. 2 1. -2. -1. -2. 1- 2-1. 2. 3. 4. 5 1. -2. 1. 2. 1 2 1 2 - 1 - 2 -3 4 1 2 1. 2 ? ?( ) ?1. ppt (1) (2) (3) ?( ? )2. (1) -(2) (3) ? ?1. ( )(1) ?( ) ( ) - ? ?( )(2) ?( ) ( ) - ? ?( )( )2. ? ?( )3. 2 3 1. ? ?( ? ) ? ? ?( ) ? ? 2. ( )3. -12 4- 52011410 123- 1 2 3 -72 1-2 34 +?-0? 1. ? ()!()?!2. 123()
2、1 2 ()12 1-?()2 -!-123-1 23412341 2-31212 -100-()(-)(-)()l23456789-115234699587361 -11032(3)-(1)-(2) 3+5(3)-(1)-(2)-(3)-(4)-(5)5+5: (5)-(5),1+4: 1-(4),1+5: (1)-(5)1+6: 1-61+7: (1)-(7)1+8: (1)-(8)() 1+9: (1)-(9),2+7:(2)-(1)-(2)-(3)-(4)-(5)-(6)-(7) :(2)-(5)-(6)-(7)28(2)-(5)-(6)-(7)-(8)-(,1,-,)2,36+5879l9+37+1013+1210+103+224+1720+104+749+247+643+846+5438+62-423+181924+161864927-l6-6:6-(1)-(2)-(3)-(4)-(5)-(6)7-7:(7)-(1)-(2)-(3)-(4)-(5)-(6)-(7)10-4:(10),-(1),-(2)-(3)-(4)10-5:(10)-(5)10-6(10)-(5)-(6)(10)-(1)-(5)2()100-10100-1003(2)100 - - (-50-153-651-855-655-161
