Community Profile

photo

dcydhb dcydhb


36 total contributions since 2018

dcydhb dcydhb's Badges

  • Thankful Level 2

View details...

Contributions in
View by

Question


How to run the main program and function files as well as function files and function files in an m file?
How to run the main program and function files as well as function files and function files in an m file? the version is r201...

12 giorni ago | 1 answer | 0

1

answer

Question


How to define variables in the main program instead of in the function file
I want to use a loop in the main program to make a the different value, and then get different graphics, but without defining...

20 giorni ago | 1 answer | 0

1

answer

Question


Defining font size in legend does not work
i define the font size of the legend in this way,it doesn't work size=15; legend1=legend(',,,',',,,','FontSize',size)) bu...

2 mesi ago | 1 answer | 0

1

answer

Question


Why doesn't legend distinguish colors?
when plotting the figures, figure 1 Legend distinguishes colors and the figure 2 legend doesn't,why? codes are as this clc; ...

2 mesi ago | 2 answers | 0

2

answers

Question


How to use matlab to call c + function file and draw?
The following c++ function file is a formula that contains some piecewise functions. Let's first assume that Re=2320, so how to ...

2 mesi ago | 1 answer | 0

1

answer

Question


Variable is in a function file, how do I use a loop to change the value of this variable?
If the variable is in the main program, I can compile a loop to change the value of a variable and get the result with the varia...

2 mesi ago | 2 answers | 0

2

answers

Question


How to remove the connection between head and end?
Why is the data at the end of the first group and the beginning of the second group connected? using plot3 and codes are as ...

3 mesi ago | 1 answer | 0

1

answer

Question


the cpoy and paste of matrix will change the rank?
i use the following codes to get the matri of A , and the rank of A is 10,but when i copy the A and recalculate the rank of a,i...

3 mesi ago | 1 answer | 0

1

answer

Question


System is rank deficient. Solution is not unique.
when i use 'equationsToMatrix',the roots is so big,for example, a0 = - 3.709974539e221 + 1.690416187e223*i a1 = ...

3 mesi ago | 0 answers | 0

0

answers

Question


If the integral decomposition solution is not obtained, what integral method can be used to get the closest value?
codes are as this, if all the value except the r are 1, what integral method can be used to get the closest value? syms d z r;...

3 mesi ago | 1 answer | 0

1

answer

Question


‘’fprintf‘’ cannot be used in a loop?
i just want to use 'fprintf' to print some calculating results,can't it be exculated in the loop? codes are as this syms a...

3 mesi ago | 1 answer | 0

1

answer

Question


the 'fprintf' problem
codes are as this name = 'Alice'; age = 12; X = sprintf('%s will be %d this year.', name, age) y= fprintf('%d will be %...

3 mesi ago | 1 answer | 0

1

answer

Question


Why does the system of linear equations get a large solution, and the checking calculation is no problem?
omega=1.795200; m0=7.234737; m1=1.816835; m2=5.349043; m3=8.732933; m4=12.024736; m5=15.265388; m6=18.476340; m7=2...

3 mesi ago | 0 answers | 0

0

answers

Question


How to accelerate the following code using 'equationsToMatrix'?
i just want to solve the 20 linear equations with 'equationsToMatrix',but it really runs out a lot of time,so how to accelerate ...

3 mesi ago | 0 answers | 0

0

answers

Question


The difference between using and not using '' in the solve() function
what is The difference between using and not using '' in the solve() function? and should we use '' ? codes are as this clc...

3 mesi ago | 1 answer | 0

1

answer

Question


How to improve the accuracy of drawing, especially for infinite functions?
in some plot assignments,we can use 'ezplot' to plot the more accurate figure but for infinite functions the 'ezplot' still can'...

3 mesi ago | 1 answer | 0

1

answer

Question


The solution of the nonlinear equation obtained by ‘fzero’ is different from that of 'fsolve'.
i use the 'fzero' and 'fsove' to get the roots of the nonlinear equation,and the function figure is as this ,so we can see the ...

3 mesi ago | 1 answer | 0

1

answer

Question


can you define an interval When you use 'fsolve' to define the initial value?
for one dimentional question, when use fzero to get the roots ,we can define the intitial value as an interval [x1,x2] but ...

3 mesi ago | 1 answer | 0

1

answer

Question


the problem of using 'case'
i want to use a loop of omega and when the omega has diffreent value ,the m0,m1,m2...have the different value,so in the loop i u...

3 mesi ago | 1 answer | 0

1

answer

Question


How to get the first Ten Solutions of nonlinear equations
how to get the only one root of f==0 and the first 10 positive roots of g==0, and when i change the value of omega it will...

3 mesi ago | 0 answers | 0

0

answers

Question


why it can't be used as a number?
i get the two numbers,but why it can't be used as the number? codes are as this clc; clear all; close all; a_0k =... ...

3 mesi ago | 1 answer | 0

1

answer

Question


why use the equationsToMatrix can get the precise result?
Why do you use equationsToMatrix to get the root and bring back the equation, which is not exactly 0? codes are as this clc;...

4 mesi ago | 1 answer | 0

1

answer

Question


Which version can support the naming of m files in Chinese and the use of space naming?
excuse me,Which version can support the naming of m files in Chinese and the use of space naming? thanks a lot!!!

4 mesi ago | 1 answer | 0

1

answer

Question


How to export the result as a picture
How to export the result as a picture. I use the biograph function that comes with matlab to get the roadmap, but I can't c...

5 mesi ago | 1 answer | 0

1

answer

Question


Convert color images to binary images, which can be implemented in matlab 7 and not run in 2014a
codes are as this clc; clear all; close all; B = imread('1.jpg'); A= rgb2gray(B); [m,n]=size(A); for i=1:1:m for j=1:...

5 mesi ago | 0 answers | 0

0

answers

Question


Ideal displacement source not found in simscape.
I want to use simscape to simulate the automobile damping system driving on a sinusoidal uneven road, so I need to add a sourc...

5 mesi ago | 0 answers | 0

0

answers

Question


the simscape of mass-spring-damping system can't get the ideal result
in the simscape,the mass-spring-damping system, i set the signal builder build the force as this, and in the motion se...

5 mesi ago | 1 answer | 0

1

answer

Question


the piecewise function runs out a queer figure
function codes are as this function f = myfun(x) if (x<1); f=x.^2 ; else f=x; end end main program code...

5 mesi ago | 0 answers | 0

0

answers

Question


How to use a handle to define a piecewise binary function
How to use a handle to define a piecewise binary function that can express the definition of the following expression The...

6 mesi ago | 0 answers | 0

0

answers

Question


How to easily define the following expressions
In this system of equations, I want to solve uppercase a (n, k) and b (n, k), everything else is known, because k is zero, s...

6 mesi ago | 0 answers | 0

0

answers

Load more