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答案:
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1.★★(2)z=f(,x2y)
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2.【填空题】设f(z)=z,若z 1 =3+4i,z 2 =-2-i,则f(z 1 -z 2 )=____.
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3.B F(z)=A、F(2)=2B、F()=
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4.求下列函数的(1) F(z)(3) F(z)Z反变换zz 0.5F(z)(z 0.8)(z 0.1)0.5z2(z 1)(z0.5)(4)F(z)z(z 1)( z 2)
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5.已知厂[k的z变换F(z)=2)(z 2y,F)的收敛域为寸,[k是因果序列。A、z|2
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6.71.已知f(k)=2() sin su(k),其z变换F(z及其收敛域
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7.(9)f(x,y,z)=2 y2 1
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8.设f(x)满足f"(x)+f"2(z)=2x,且f"(0)=0,则______.
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9.32.有int型变量x、y、Z,语句f(x>y)z=0; else=1”和Az=(x2y)?1:0;Bz=x >y,CDz=x<=y?
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10.18.序列f(n)=(2)u(n)的单边z变换F(zF