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[单选题]
- l' rn enjoying the long surnrner evenings. - ________arn I. A.So B. Neither
A.A.So
B.B. Neither
C.C. Nor
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A.A.So
B.B. Neither
C.C. Nor
试证明:
设fk∈L(Rn)(k∈N),,a.e.x∈Rn.若存在F∈L(Rn),使得|f(x)|≤F(x)(x∈Rn),且令
hk(x)=mid{-F(x),fk(x),F(x)}(即取中间之值),则.
试证明:
假设f(x)定义在Rn上,如果对于任意的ε>0,存在g,h∈L(Rn),满足g(x)≤f(x)≤h(x)(x∈Rn),且使得
,
则f∈L(Rn).
设贷款额为L,利率为i,还款现金流为R1,R2,…,Rn,利息部分的税率为r.因此,实际还款现金流为(R1-rI1),…,(Rn-rIn).证明:在这种情况下,实际的贷款利率为i(1-r).
A.staying
B.stay
C.being stayed
D.have stayed
A.creative
B.attractive
C.humorous
D.honest
A.(703)524-4300.
B.(073)418-12341.
C.(703)525-0300.
D.(703)979-3722.