7.0




5.4.


I.        .

) Ø Ú b;

) 1 £ x £1 2 £ x £ 4;

) x [a, b];

) ;

) , ;

) : y = 1 + x.

II.     , - TRUE , .

) )

) )

) e)

III.   , TRUE.

) (x >= 0) and (y >= 0) and (y <= x) or (y <= -1);

) (x*x +y*y <= 1) and (y >= 0) and not(y < x);

) (y >= x) and (y >= -x);

) (y <= 2) and (x <= 2) or (x*y < 0);

) (x*y >= 0) and (y <= x) and (x < 1) and (y >-1);

) (x*x + y*y <= 4) and (y >= x*x).

IV.    : i =5; j =2; k =2; a =TRUE; b =FALSE.

) i ¹1Ú a Ù Ø (b Ù j > k);

) (i £1Úa) Ù (b Ú j= k);

) Ø(i = j2 + 1) Ú a Ù b;

) i> j + k Ù a Ù Ø b;

) a Ú b Ù (i*j > k2);

) (a Ú Ø b Ù j2 = k2) Ù Ø b.

6.

().

, , . .