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答案:
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1.e>e(x≠y
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2.If X and Y are random variables with E(X) =5 and E(Y) = 8, then E(2X + 3Y) is:
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3.已知\( y = x{e^x} \),则\( {y^{(n)}} \)为( ).A.\( x{e^x} \)B.\( {e^x}(x n) \)C.\( {e^x}(x n - 1) \)D.\
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4.Vx(7E(x,o)> ( y(E(y, g(x))A ze(z, g(x))> E(y, z))
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5.设随机变量X与Y相互独立,且E(X)与E(Y )存在,记U = max(X, Y), V = min(X, Y ),则 E(UV ) =( ).
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6.曲线 2 2 1 1 x x e y e -
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7.若y(n)=x(n)h(n),则Y(e^jw)=X(e^jw)H(e^jw).
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8.若随机变量X与Y的二阶矩有E[XY] = 0,则E[X]E[Y] = 0
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9.If and only if x=ln(y), y=e^x.
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10.y=f(x)e的x次方,()=(f(x) f‘(x))e的x次方