Math lab questions solve it

Write a generalized math lab program to print the following pattern first 5 the 4 4 then 3 3 3 then 2 2 2 2 then 1 1 1 1 1 (it look like triangle shape)

[Matt J]

I hope you realize that if someone answers your question, you will not be able to delete your post. Something to think about in case this is a homework question that your instructor might see.

[Hakim]

No problem

[Rik]

For future questions:

You can find guidelines for posting homework on this forum here. If you have trouble with Matlab basics you may consider doing the Onramp tutorial (which is provided for free by Mathworks). If your main issue is with understanding the underlying concept, you may consider re-reading the material you teacher provided and ask them for further clarification.

If you don't follow this advice, the chance of someone closing your question is substantial.

[Hakim]

Rik I faced problem that's why I post it

[Rik]

There is no problem posting a question, but you see what happens.

What would happen if I gave you my email address as you requested? Will you follow the advice I gave you in my comment? Somehow I doubt it. I don't do private consulting, nor do most people here. Yair Altman is one of the few exceptions I'm aware of.

If you want to learn Matlab, you need to put in some effort. Follow the advice I gave you in the previous comment, and you will find most people here are willing to help you.

[Hakim]

Plz give me your email address

[Rik]

Why don't you respond to what I ask in my comment?

What were you planning to send me? Anything relevant to this question can be posted here. I don't see why you would need to send me anything by email. You already asked me for my email address via the contact form. Repeating the request in a comment does nothing useful.

[Hakim]

 I will send some questions

[Rik]

If you ignore half of my comment, why should I respond to your comment?

You can find guidelines for posting homework on this forum here. If you have trouble with Matlab basics you may consider doing the Onramp tutorial (which is provided for free by Mathworks). If your main issue is with understanding the underlying concept, you may consider re-reading the material you teacher provided and ask them for further clarification.

[Rik]

Come on. Read my comments. Stop sending me emails. If you want to show me a pdf, attach it to a comment or question.

If your English is not good enough to understand me, use something like Google Translate to translate it to your own language.

I'm not a private consultant. I will not give you my email address.

Please read the advice I gave you.

[John D'Errico]

And this just one of many reasons why answering homework questions is just a flat out bad idea on Answers. The student thinks it is ok to pester you for help, in fact, even demand help, as @Hakim is now demanding that people provide their e-mail addresses.

Even offering simple help as Rik did is bad for Answers, because it helps to create a monster, and because it encourges other monsters to think Answers is a service where we wil do their homework.

Is this homework? Or possibly even more likely, this is a test question @Hakim wants to have answered, and thinks is being subtle by declaring it NOT homework. Obviously, as there is no alternative reason why such an easy question would be so important to be answered.

I'm sorry, but this question should have been closed immediately. I would even argue that we should close the question now, even with an accepted answer. But then I would have never answered the question.

[Rik]

@John D'Errico I'll close the question.

@Hakim, stop contacting me via email. If you provide any proof you've read and understood the links I provided I may respond. If you send me another request via the contact form I will contact Mathworks staff.

Answer 1

[Rik]

I will not do your homework for you, but these pointers should help you.

doc for

 FOR    Repeat statements a specific number of times.
    The general form of a FOR statement is:
  
       FOR variable = expr, statement, ..., statement END
  
    The columns of the expression are stored one at a time in
    the variable and then the following statements, up to the
    END, are executed. The expression is often of the form X:Y,
    in which case its columns are simply scalars. Some examples
    (assume N has already been assigned a value).
  
         for R = 1:N
             for C = 1:N
                 A(R,C) = 1/(R+C-1);
             end
         end
  
    Step S with increments of -0.1
         for S = 1.0: -0.1: 0.0, do_some_task(S), end
 
    Set E to the unit N-vectors
         for E = eye(N), do_some_task(E), end
 
    Long loops are more memory efficient when the colon expression appears
    in the FOR statement since the index vector is never created.
 
    The BREAK statement can be used to terminate the loop prematurely.
 
    See also PARFOR, IF, WHILE, SWITCH, BREAK, CONTINUE, END, COLON.

    Documentation for for
       doc for

doc repmat % although you can do this part with a loop as well

 REPMAT Replicate and tile an array.
    B = REPMAT(A,M,N) or B = REPMAT(A,[M,N]) creates a large matrix B 
    consisting of an M-by-N tiling of copies of A. If A is a matrix, 
    the size of B is [size(A,1)*M, size(A,2)*N].
 
    B = REPMAT(A,N) creates an N-by-N tiling.  
    
    B = REPMAT(A,P1,P2,...,Pn) or B = REPMAT(A,[P1,P2,...,Pn]) tiles the array 
    A to produce an n-dimensional array B composed of copies of A. The size 
    of B is [size(A,1)*P1, size(A,2)*P2, ..., size(A,n)*Pn].
    If A is m-dimensional with m > n, an m-dimensional array B is returned.
    In this case, the size of B is [size(A,1)*P1, size(A,2)*P2, ..., 
    size(A,n)*Pn, size(A, n+1), ..., size(A, m)].
 
    REPMAT(A,M,N) when A is a scalar is commonly used to produce an M-by-N
    matrix filled with A's value and having A's CLASS. For certain values,
    you may achieve the same results using other functions. Namely,
       REPMAT(NAN,M,N)           is the same as   NAN(M,N)
       REPMAT(SINGLE(INF),M,N)   is the same as   INF(M,N,'single')
       REPMAT(INT8(0),M,N)       is the same as   ZEROS(M,N,'int8')
       REPMAT(UINT32(1),M,N)     is the same as   ONES(M,N,'uint32')
       REPMAT(EPS,M,N)           is the same as   EPS(ONES(M,N))
 
    Example:
        repmat(magic(2), 2, 3)
        repmat(uint8(5), 2, 3)
 
    Class support for input A:
       float: double, single
       integer: uint8, int8, uint16, int16, uint32, int32, uint64, int64
       char, logical
 
    See also BSXFUN, MESHGRID, ONES, ZEROS, NAN, INF.

    Documentation for repmat
       doc repmat

    Other functions named repmat

       codistributed/repmat    InputOutputModel/repmat    tall/repmat
       gpuArray/repmat         symfun/repmat

doc fprintf

 FPRINTF Write formatted data to text file.
    FPRINTF(FID, FORMAT, A, ...) applies the FORMAT to all elements of array A and
    any additional array arguments in column order, and writes the data to a text
    file.  FID is an integer file identifier.  Obtain FID from FOPEN, or set it to 1
    (for standard output, the screen) or 2 (standard error). FPRINTF uses the
    encoding scheme specified in the call to FOPEN.
 
    FPRINTF(FORMAT, A, ...) formats data and displays the results on the screen.
 
    COUNT = FPRINTF(...) returns the number of bytes that FPRINTF writes.
 
    FORMAT is a character vector that describes the format of the output fields, and
    can include combinations of the following:
 
       * Conversion specifications, which include a % character, a
         conversion character (such as d, i, o, u, x, f, e, g, c, or s), and optional
         flags, width, and precision fields.  For more details, type "doc fprintf" at
         the command prompt.
 
       * Literal text to print.
 
       * Escape characters, including:
             \b     Backspace            ''   Single quotation mark
             \f     Form feed            %%   Percent character
             \n     New line             \\   Backslash
             \r     Carriage return      \xN  Hexadecimal number N
             \t     Horizontal tab       \N   Octal number N
         For most cases, \n is sufficient for a single line break. However, if you
         are creating a file for use with Microsoft Notepad, specify a combination of
         \r\n to move to a new line.
 
    Notes:
 
    If you apply an integer or text conversion to a numeric value that contains a
    fraction, MATLAB overrides the specified conversion, and uses %e.
 
    Numeric conversions print only the real component of complex numbers.
 
    Example: Create a text file called exp.txt containing a short table of the
    exponential function.
 
        x = 0:.1:1;
        y = [x; exp(x)];
        fid = fopen('exp.txt','w');
        fprintf(fid,'%6.2f  %12.8f\n',y);
        fclose(fid);
 
    Examine the contents of exp.txt:
 
        type exp.txt
 
    MATLAB returns:
           0.00    1.00000000
           0.10    1.10517092
                ...
           1.00    2.71828183
 
    See also FOPEN, FCLOSE, FSCANF, FREAD, FWRITE, SPRINTF, DISP.

    Documentation for fprintf
       doc fprintf

    Other functions named fprintf

       dlarray/fprintf     icinterface/fprintf    serial/fprintf
       gpuArray/fprintf

[Hakim]

This is not my home work. So Plz solve me with cide

[Image Analyst]

@Hakim did you even try to use fprintf()? If not, you really need to learn how to use that function because it's used all the time. For example

fprintf('5\n44\n');

5
44

I'm sure you can figure out how to extend it down to 1. It's trivial.

[Walter Roberson]

This task is common to be given as an early assignment in MATLAB classes. It might not be homework for you but it is certainly homework for other people, and we are not going to post a solution.

This task is intended to be very basic. It can be done one character at a time knowing only how to write for loops, how to display a single character, and how to code the displaying of end of line. Or it can be done one line at a time knowing how to write for loops and how to store into an array and how to display an array.

[Hakim]

Can you give me your email address

[Walter Roberson]

Image Analyst uses a public junk email address that anyone can read and which deletes all messages after one hour. He almost never looks there. So even if you managed to find the address, chances are slim that he will ever read the message.

I would be unlikely to respond to an email about this task, unless it would be to point you to resources to learn matlab.

I would suggest that for your learning purposes that you first implement the program in any procedural programming language that you are already comfortable with, and then figure out the closest matlab equivalent to each statement.

[Hakim]

Plz give me your email before @

[Walter Roberson]

My email address before the @ is c6614770