日誌
2023-06-07
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Q1：
LET A= ∫ (IN X)2 dx
答：
A 1 < A < 2
B 0 < A < 1
C A < 0
D A = 0
答：0 < A < 1
Q2：
Let a=∫1 0 x5(1-x3)1/3 dx，then
答：0<A<1
Q3：
for the function f(X)=3√x(x-7)²
which of the following statements are true ?
which of the following statements are true ?
f (x) is differentiable everywhere
f (7) = 0 is a relative minimum
f (x) has no relative maximum
答： f(7) = 0 is a relative minimum
Q4：
For implicit function 2xy+ex+y -2=0 dy/dx (0,ln2)=?
1 - ln2
-1 - ln2
1 + ln2
0
答案: -1 - ln2
-1 - ln2
1 + ln2
0
答案: -1 - ln2
Q5：
which of the following would be most likely to cause the demand for cheese to shift from d0 to d1
答案: an increase in income, assuming cheese is a normal good
Qˊˊ6:
f (7) = 0 is a relative minimum
f (0) = 0 is a relative minimum
f (x) is differentiable everywhere
f (x) has no relative maximum
答案: f (7) = 0 is a relative minimum
Qˊˊ7:
The figure shows the market for books before and after a sales tax is introduced. The tax on books is ____ a book, buyers pay ____ of tax per book, and the governments tax revenue is ____.
$1.20; $0.80; $128
$0.80, $1.20; $12
$0.40; $0.40; $4
$1.20; $0.80; $12
Q8:
Suppose the demand and supply functions for a certain goods are given
by:
QD=10-P
QS=P-4
Find the total economic surplus generated at the market equilibrium
A. 6.0
B. 10.5
C. 4.5
D. 9.0
答案: 9.0
