2021 Modern Scientific Computing with MATLAB(Northeastern University) 最新满分章节测试答案

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本课程起止时间为:2021-10-15到2022-01-08

【作业】1 Computer Mathematics Languages — An Overview Unit Assignment

1、 问题:In order to understand the three-phase learning stage, please revisit Example 1.5, and see which statements belong to the second and third phases. Also please think about what should be done for the first phase.
评分规则: 【 In the first phase, the user should know what is the physical meaning of the mathematical expression. That is to find a vector x, and the vector must satisfy all the items in the constraints. And how to select such a vector to minimize the objective function.
Then comes the second and third phase, and in the second phase, the problem can be described by the variable P.
And in the third phase, the function linprog() can be called to solve the problem, with
】

2 Fundamentals of MATLAB Programming Unit Test

小提示:本节包含奇怪的同名章节内容

1、 问题:Which of the following factorial calculation methods is wrong?
选项：
A:factorial(sym(n))
B:gamma(1+n)
C:prod(1+n)
D:gamma(1+sym(n)
答案: 【prod(1+n)】

2、 问题: what command is used to divide a drawing window into 4 different areas and display the image in the first area? （）
选项：
A:subplot (2,4,1)
B:plot (2,2,1)
C:subplot (2,2,1)
D:plot (2,4,1)
答案: 【subplot (2,2,1)】

3、 问题:Which of the following functions is used to draw polar coordinates? （）
选项：
A:hist ()
B:feather ()
C:polar ()
D:loglog ()
答案: 【polar ()】

4、 问题:Which of the following functions can draw a three-dimensional waterfall graphics? （）
选项：
A:surfc ()
B:ezmesh ()
C:waterfall ()
D:contour ()
答案: 【waterfall ()】

5、 问题:MATLAB provides the rotation transformation method of the surface itself, and the rotation transformation can be implemented by the ( ) function
选项：
A:plot
B:rotate
C:slice
D:meshgrid
答案: 【rotate】

6、 问题:In the function slice (x, y, z, V, x1, y1, z1), the data describing the slices is ()
选项：
A:x, y, z
B:x, y, z, V
C:V
D:x1, y1, z1
答案: 【x1, y1, z1】

7、 问题:The correct ones of the following variable names are（）
选项：
A:V_alue
B:Value-
C:Value1
D:1_Value
答案: 【V_alue;
Value1】

8、 问题:  Choose the flow control structures provided in MATLAB. （）
选项：
A:switch structures
B:conditional control structures
C:trial structures
D:loop structures
答案: 【switch structures;
conditional control structures;
trial structures;
loop structures】

9、 问题:Mulpitle choice:In graphic decoration and property settings, what functions can be used to set and obtain the properties of objects?
选项：
A:set()
B:plotxx()
C:get()
D:plotyy()
答案: 【set();
get()】

10、 问题:To find the first 20 significant digits of 10/7, use command  A = 10/7 , vpa（A，20）（）
选项：
A:正确
B:错误
答案: 【正确】

11、 问题: Generate a vector between A ∈ [0,45] with a step size of 1, the command that should be entered is A = [0: 45]（）
选项：
A:正确
B:错误
答案: 【正确】

12、 问题:  Generate a vector between A ∈ [0,200] with a step size of 4, the command that should be entered is A = [0: 4:200]（）
选项：
A:正确
B:错误
答案: 【正确】

13、 问题: A is a 3×3 matrix. Using the command A * A, can achieve the direct calculation of the corresponding elements of matrix A（）
选项：
A:正确
B:错误
答案: 【错误】

14、 问题:
选项：
A:正确
B:错误
答案: 【错误】

15、 问题:List all the prime numbers in the interval [1, 1000]. The command is a = 1:1000. （）
选项：
A:正确
B:错误
答案: 【错误】

16、 问题:The polynomial P can be simplified with the command: simplify(P).（）
选项：
A:正确
B:错误
答案: 【正确】

17、 问题:
选项：
A:正确
B:错误
答案: 【正确】

18、 问题: The naming rules of file name are consistent with the naming rules of variable names.( )
选项：
A:正确
B:错误
答案: 【正确】

19、 问题:  Both the M-script program and the M-function program have function definitions.（）
选项：
A:正确
B:错误
答案: 【错误】

20、 问题:Define an M function my_fact(n),which can calculate n!,then the command my_fact(99) can be used to calculate 99!
选项：
A:正确
B:错误
答案: 【错误】

21、 问题:Both x and y are matrices. When using the command plot (x, y), the number of rows and columns of x and y should be the same.
选项：
A:正确
B:错误
答案: 【正确】

22、 问题: contour () function can draw three-dimensional contour graphics （）
选项：
A:正确
B:错误
答案: 【正确】

23、 问题: If you want to change the viewing angle to observe 3D graphics, you can use the view function ()
选项：
A:正确
B:错误
答案: 【正确】

24、 问题:When drawing four-dimensional graphics, the calculation of the volume data V of the ternary function needs to use point operation ()
选项：
A:正确
B:错误
答案: 【正确】

25、 问题:If a polynomial P (s) is given by P (s) = (s + 3)2(s2 + 3s + 2)(s3 + 12s2 + 48s + 64), it can be simplified by using the simplify() function.（）
选项：
A:正确
B:错误
答案: 【正确】

26、 问题:  Choose the flow control structures provided in MATLAB. （）