11. 3 " ".
12. , , , .
:
)
)
) 5, 6, 7, D5, D6, D7, D8;
) 5, 6, 7, 5, 6, 7;
) D5 =5*5 ,
) , () D6, D7;
) D6, D7 , ;
) D8 .
13. , , .
:
)
)
) (: .) 14, 17, 18, 19, 20, (: $ (.)) 17, 18, 19, 20;
) 14, 17, 18, 19, 20;
) 17 : =14*17;
) , () 18, 19, 20;
) 18, 19, 20. ;
) 17 : =$$14*17 ( $ F4);
. ; ENTER.
) , () 18, 19, 20.
14 (). y=kx+b, k, b, x.
:
)
) 28, 29, 30, 30, D30;
) 31 ;
) , () 31, D31.
15 (). (10 ) . . , , . , .
