(1)27-18+(-7)-32
(2)1/3+(-1/5)-1+2/3
(3)0.5+(-1/4)-(-2.75)+1/2 (4)(-2/3)+(-1/6)-(-1/4)-1/2
计算:(1)((11)/(12)-(7)/(6)+(3)/(4)-(13)/(24))×(-48);(2)-9+5×|-3|-(-2)2÷4;(3)-18+(-
计算:(1)/(3)×(3)/(5)+1(5)/(7)-(5)/(9)×(5)/(7)1-(5)/(7)×(21)/(25)(1)/(2)+(5)/(4)×(4
2 -5 1 2-|||--3 7 -1 4-|||-计算 D=-|||-5 -9 2 7-|||-4 -6 1 2
2.2 计算行列式-|||-3 1 -1 2-|||--5 1 3 -4-|||-(1)-|||-2 0 1 -1-|||-1 -5 3 -3-|||-1 1
2 3 0 0-|||-1 1 0-|||-=-|||-4 8 12 6-|||-1 3 5 7-|||-计算-|||-A 27-|||-B 54-|||-C
[单选题]-27,-7,1,3,5,13,( )A.33B.31C.27D.25
[主观题]计算。7/8-5/6=2/9+1/2=6/7-2/3=3/10+1/4=3/7+1/9=1/3-1/5=1/6+1/4=5/7-1/5=
计算:(1)(-1)100×5+(-2)4÷4;(2)(-3)3-3×(-(1)/(3))4;(3)(7)/(6)×((1)/(6)-(1)/(3))×(3)/
练习 已知行列式 2 1 4 1 D= 3 -3 2 1 1 -1 2 1 5 0 6 2 -|||-计算 _(31)+2(A)_(32)+3(A)_(33)
1、计算下列行列式-|||-2 1 -3 1-|||-(1) 3 1 o 7-|||--1 2 4 -2-|||-1 0 -1 5