MTH019 Final Review Exercise 21-22
Hello, dear friend, you can consult us at any time if you have any questions, add WeChat: daixieit
MTH019 Final Review Exercise 2122
Questions
I. Fill in the blanks.
1. 1. l北 ╱ _ 、 = .
2. If the function
, e北2 _ 1
.(bπ z = 0
is continuous at z = 0. Then b = .
3. The second derivative of the function y = arctan z is .
4. \0 2 dz = .
5. The maximum value of f (z) = _2z3 + z2 on [_ π 2] is .
6. The particular solution of y/ = zy +z+y +1 with the initial condition y(0) = 1 is .
II. Multiple Choice Questions.
7. arcsin ╱ _ 、 = [ ]
(A) 6 . (B) _ 6 . (C) 2k′ + 6 . (D) 2k′ _ 6 .
8. nl 尸n + 4^n _ 尸n _ 2^n = [ ]
(A) 1. (B) 2. (C) 3. (D) 0.
9. Let f (z) =.( (z + 1) arctan z [ ]
(A) z = 1 is a removable discontinuity. (B) z = _1 is a removable discontinuity.
, 1
(C) z = 1 is a nonremovable discontinuity. (D) z = _1 is a nonremovable discontinuity.
10. What is the equivalent infinitesimal of z as z → 0? [ ]
(A) z2 + 2z. (B) e北 _ 1. (C) ^1 + z. (D) 1 _ cos z.
11. Find the linear approximation to the function y = arccos at the point z = 2. [ ]
(A) d(z) = 4 + 4 . (B) d(z) = 4 + 1 . (z _ 2). (C) d(z) = 4 _ 4 . (D) d(z) = 4 _ 1 . (z _ 2).
2
12. lim (2z)北 = [ ] 北 →0+
(A) 0. (B) e. (C) e2 . (D) 1.
13. The number of the zero point of the derivative of the function f (z) = z2 (z + 1)(z + 2) is [ ] (A) 2. (B) 3. (C) 4. (D) 5.
14. The point on the curve y = ^z that is closest to the point (5 π 0) is [ ]
(A) (4 π 2). (B) ( 9 3^2). (C) (2 π 4). (D) ( 3^2 9 ).
15. The tangent line of the curve y = at (0 π 1) is [ ]
(A) y = 1. (B) y = z. (C) y = 0. (D) vertical.
16. The graph of function y = f (z) is shown in the Figure 1. If the two regions A and B enclosed by 5
the curve y = f (z) and the line y = 3 have the same area, then zf/ (z)dz = [ ]
1
(A) 0. (B) 2. (C) 6. (D) 12.
Figure 1
ln 北
17. Find G/ (z), where G(z) = e_t di. [ ]
(A) . (B) . (C) 1. (D) z.
18. What is the length of curve z = 3i2 _ 3π y = 2i3 + 1 π 0 < i < 1? [ ]
(A) 4^2 _ 2. (B) 4^2. (C) 4^2 + 2. (D) 4.
z2
(A) z _ arctan z + 女. (B) _ arctan z + 女. (C) z _ ln(z2 + 1) + 女. (D) _ ln(z2 + 1) + 女.
1
20. Let t = e_北 _ 1, then f(e_北 _ 1)e_北 dx = [ ]
0
1 1 0 _1
(A) f(t)dt. (B) _ f(t)dt. (C) f(t)dt. (D) f(t)dt.
0 0 _1 0
北
21. Assume f(x) is continuous on [0; +&) and f(x) > 0 for x ∈ [0; +&). Then F (x) = 0 北tf(t)dt is [ f(t)dt
0
] on (0; &).
(A) increasing. (B) decreasing. (C) negative. (D) a constant function.
22. If an object moves along a coordinate line from the origin x = 0 with an initial velocity v0 = 0 (m=s)
and its acceleration is a(t) = sin t (m=s2 ), what is its position at the instant t = (s)? [ ]
III. Comprehensive problems.
23. Let f(x) = 2x4 + 8x3 + 21; _& < x < &.
(1) Find the local extreme value (or values) of f .
(2) Find the inflection point (or points) of f .
24. Evaluate the area of the region bounded by the graphs of the given equations.
(1) y = x3 , y = ^3x.
(2) y = xe北 , between x = 1 and x = 3.
25. Given the curve C : y = a _ bx2 (a > 0; b > 0). Find the values of a and b such that C satisfies the following two conditions:
(1) The line y = x + 1 is tangent to C;
(2) The volume of the solid obtained by revolving the plane region bounded by C and x-axis about the y-axis becomes maximum.
2022-12-15