總體經濟題目(英文)選擇並解釋 If Bulge Bank has a required reserve ratio of 10 percent,loans of 25000dollars,deposits of 100000dollars,value cash of 10000dallars,and reserves at the Fed of 65000 dollars,then the bank a)has excess reserves of 55000 dollars b)has excess reserves of 75000 dollars c)has excess reserves of 65000 dollars a bank has 200dollars in checking deposits,800dollars in savings deposits,700dollars in time deposits,900 dollars in loans to businesses,300dollars in outstanding credit card balances,600dollars in government securities,10dollars in currency in its vault,and 20 dollars in deposits in its reserve account at theFed.Thebank's reserves are equal to A)630 B)620 C)10 D)20 E)30

總體經濟題目(英文)選擇並解釋 If Bulge Bank has a required reserve ratio of 10 percent,loans of 25000dollars,deposits of 100000dollars,value cash of 10000dallars,and reserves at the Fed of 65000 dollars,then the bank a)has excess reserves of 55000 dollars b)has excess reserves of 75000 dollars c)has excess reserves of 65000 dollars a bank has 200dollars in checking deposits,800dollars in savings deposits,700dollars in time deposits,900 dollars in loans to businesses,300dollars in outstanding credit card balances,600dollars in government securities,10dollars in currency in its vault,and 20 dollars in deposits in its reserve account at theFed.Thebank's reserves are equal to A)630 B)620 C)10 D)20 E)30


choose a)has excess reserves of 55000;
choose D)20



餘式定理習題,
多項式f(x)除以x^2;+2x+3餘x+12,f(x)除以(x+1)^2餘5x+4,求多項式f(x)除以(x+1)(x^2;+2x+3)的餘式.
本人不會餘式定理


由第一個條件知存在多項式p(x),使得f(x)=(x^2+2x+3)*p(x)+x+12;(1)
由第二個條件知存在多項式q(x),使得f(x)=(x+1)^2*q(x)+5x+4.(2)
(2)式中令x=--1得f(--1)=0*q(--1)+5*(--1)+4=--1,代入(1)得
--1=(1--2+3)*p(--1)--1+12,於是p(--1)=--6.
故可設p(x)=(x+1)*r(x)--6,其中r(x)是某一多項式.代入(1)得
f(x)=(x^2+2x+3)*(x+1)*r(x)--6(x^2+2x+3)+x+12=(x+1)(x^2+2x+3)*r(x)--(6x^2-+11x+6)(3)
由(3)知f(x)除以(x+1)(x^2+2x+3)的餘式是--(6x^2-+11x+6)



總體經濟題,
已知GDP為20億美元,政府預算有2億美元的赤字,國際收支逆差為2億美元,儲蓄額為4億美元,則().
1政府支出為3億美元
2消費額為15億美元
3消費加政府支出為16億美元
4投資為4億美元


由“投資=私人部門儲蓄+政府部門儲蓄+國外部門儲蓄”知:I=4-2+2=4.選定4.
注:國外正儲蓄為本國淨出口逆差.



一道規律題,要講解
2,9,28,(),126,……
要講解


2=1^3+1
9=2^3+1
28=3^3+1
()=4^3+1=65
126=5^3+1
()=65