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題目解答(圖片問題)

熱度 2已有 409 次閱讀2023-4-25 22:48 | 題目, 解答, 圖片, 問題

Q：

for the function f(X)=3√x(x-7)²
which of the following statements are true ?
  f (0) = 0 is a relative minimum
  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

Q1：

LET A= ∫ (IN X)2 dx
答：
A  1 < A < 2
B  0 < A < 1
C  A < 0
D  A = 0
The answer is B. 0 < A < 1

Q2：

Let a=∫1 0 x5(1-x3)1/3 dx，then

答：0<A<1

Q3：

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
  6.0
  10.5
  4.5
  9.0

A ：9.0

For implicit function 2xy+ex+y -2=0 dy/dx (0,ln2)=?

-1 - ln2