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已知f(x)=x+asinx.若f(x)在(-∞,+∞)上为增函数,则实数a的取...
已知f(x)=x+asinx.若f(x)在(-∞,+∞)上为增函数,则实数a的取值范围 .
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1∥l
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已知函数f(x)=x
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(a>b>0)的一个焦点F引直线bx-ay=0的垂线,垂足为M,延长FM交y轴于E,若
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