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答案:
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1.012d(x 2)
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2.因式分解:\[x^2 5x 6 = (x 2)(x 3)\]
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3.main() {int x=2,y=-1,z=2; if(x A.3B.2C.1D.0
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4.2)fx)=x
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5.计算 [(x, y) | x <- [1, 2], y <- [1, 2]] 的结果是
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6.已知集合A={x|x(x–2)=0},那么正确的是( )
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7.已知x=2,语句x*=x+1执行以后,x的值是:
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8.已知M=4x 2 -3y 2 xy,N=4xy-2y 2 -x 2 ,当x=3,y=-2时,求2M-3N的值。
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9.∫∫sin(x^2+y^2)dxdy
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10.下列各组中,两个集合相等的是A.M = {(1, 2)},N = {(2, 1)}B.M = {1, 2},N = {(1, 2)}C.M = {x|x = 2k 1, k ∈ Z}, N = {x