问题
解答题
请按要求计算: (1)若规定
(2)若规定
|
答案
(1)根据题意得:
3 2 4 3
=3×3-4×2
=9-8
=1.
故答案为:1;
(2)3 1 -1 11 -2 6 -7 4 -5
=3×(-2)×(-5)+11×4×(-1)+(-7)×(-2)×(-1)
-3×4×6-11×1×(-5)-(-7)×(-2)×(-1)
=30-44-14-72+55+14
=-31.
请按要求计算: (1)若规定
(2)若规定
|
(1)根据题意得:
3 2 4 3
=3×3-4×2
=9-8
=1.
故答案为:1;
(2)3 1 -1 11 -2 6 -7 4 -5
=3×(-2)×(-5)+11×4×(-1)+(-7)×(-2)×(-1)
-3×4×6-11×1×(-5)-(-7)×(-2)×(-1)
=30-44-14-72+55+14
=-31.