An inverse relationship between an independent variable x and a dependent variably y means that as x increases, y decreases, and vice versa.
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1.An inverse relationship between an independent variable x and a dependent variably y means that as x
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2.What are the independent and dependent variables?
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3.x y x y(4)y x y x y XJ
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4.变量x,y需要交换值,可以使用的方法有: (x,y)=(y,x)|[x,y]=[y,x]|t=y y=x x=t|x,y=y,x
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5.公式(∀x)[P(x)∧Q(x,A)→(∃y)[E(x,y)∨S(y)]]中,∀x的辖域为(),∃y的辖域为()A.P(x); R(x, y)B.P(x) ꓥ Q(x, A); R(x, y)C.P(x
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6.把 "x ( P( x )®$ y Q( x ,y ))化为前束范式,推导过程正确吗?
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7.x y r (4)y x y xx y x y
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8.[单选] 若yA . y=y(x) B . y=y(x) cC . y=y(x) cD . y=y(x) c
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9.()线性回归分析是描述一个因变量(或称为响变量dependent variable) y与一个或多个自变量(independent variable) x 之间的线性依存关系。A.正确B.错误
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10.Найдите все положительные значения a, при каждом из которых система уравнений {|x| |y|=a,y=√x 4 имеет