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Why is the inv function not working in this code (simple)
Best to put commas in your matrix difinition so that the parser doesn't inadvertently combine things that you didn't want. E.g.,...

2ヶ月 前 | 1

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(ODE45) Unable to perform assignment because the left and right sides have a different number of elements
It might be simpler to have separate files for this. Put this code (and only this code) in a file called HW4_matlab.m %% Solvi...

2ヶ月 前 | 0

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Precision in calculation of large digits
You need to convert to vpa first so that the factorial calculation is done with extended precision. factorial(vpa(97))

2ヶ月 前 | 2

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Attempting to completely fill out an array(6,7) with 1's and 2's for connect4
Maybe you could explain what your code is supposed to be doing. Commenting the code would be great. But if you just want a boa...

2ヶ月 前 | 0

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not enough argument input
You need to put your function code into a file called dew_point.m Then you need to call your function with inputs, e.g. T = so...

2ヶ月 前 | 1

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Can someone help me Create a function called that will automatically generate an array where the elements in the array are the sum of the indices? i am lost on this.
If I understand your description correctly, the magic( ) function has nothing to do with your assignment. You are simply asked t...

2ヶ月 前 | 1

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Data arithmatic addition with single precision
Floating point operations will often yield slightly different results if you change the order of operations. This is to be expec...

2ヶ月 前 | 0

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How to locate the index of the maximum value in a given range
Use the 2nd output of the max function: [p,i] = max(y); p is the max value, i is the index of the max value t(i) is the value...

2ヶ月 前 | 0

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Change all elements in 2nd column to 3
vArr(:,2) = _____; % <-- you fill in the blank

2ヶ月 前 | 0

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Create array Arr with 5 rows and 4 columns with each element = 5
Yes. Replace all of your numbers with 5 and you will have it. E.g., Arr = [5 5 5 5; etc. This is the hardest way to accomplish...

2ヶ月 前 | 0

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Create array Arr with 5 rows and 4 columns with each element = 5
Hint: doc zeros doc ones doc repelem doc repmat

2ヶ月 前 | 0

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if i have 256x256 matrix and i want to zero padding it to 512x512 how can i do ?
If you just want it padded on two sides, then simply k_im = your 256x256 matrix k_im(512,512) = 0; % pad 0's out to (512,512) ...

2ヶ月 前 | 0

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How can I plot accleration in the x, y, and z directions? Each accerlation coordinate a(x,y,z) is associated with a moment in time.
Would a simple 2D plot suffice? E.g., plot(t,x,t,y,t,z); grid on legend('x','y','z'); xlabel('time') ylabel('acceleration'...

2ヶ月 前 | 1

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how to write the this in matlab e^((x^-1)/2) -1
y = exp((x.^2-1)/2) - 1; See the Getting Started section of the doc for initial help on writing MATLAB code.

2ヶ月 前 | 0

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Save serial datenum as decimal, not scientific notation
First, MATLAB stores all doubles the same way ... as IEEE binary floating point format. What you are seeing as "737389.4167 beco...

2ヶ月 前 | 0

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Breaking changes for C++ API?
The current online doc for mxCreateStructMatrix( ) says the last argument must contain "... one or more field names ...", which ...

2ヶ月 前 | 0

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Writing a funciton for e^x values?
You use the same n value for the first three terms. You need to increment n each time you add a term, including the first two t...

2ヶ月 前 | 0

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Trying to write a function for the inverse of a matrix.
You are missing the part where you append the identity matrix to the right side of A before you start your Gauss elimination. So...

2ヶ月 前 | 0

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mex fortran code containing intrinsic function using Intel fortran compiler
Can you post the offending code? Maybe you are calling it with a non-real argument and the compiler is complaining that it can't...

2ヶ月 前 | 0

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How to re-prompt user input if given incorrect value?
str2double will turn your inputs into numeric, so you will pass your isnumeric( ) test even if there are problems. Instead, chec...

2ヶ月 前 | 0

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Can not use the Fibonacci built in function
For simplicity, let's assume you don't know how many iterations you need in advance. So start with your current code: while x <...

3ヶ月 前 | 0

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Trapezoidal rule in a for loop
You made a good start, but there are several problems with your summation. You don't accumulate into your trapez variable, you ...

3ヶ月 前 | 0

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Why is my own echelon function printing incorrect matrix
I haven't checked all of your code, but I assume this: if ~all(A(k,:))==0 %check to see if row of zeros or not was meant to be...

3ヶ月 前 | 0

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(1/x)>2 . why x<(1/2) is Not the answer
When you multiply (or divide) an inequality by a value, the direction of the inequality changes if the value is negative. So whe...

3ヶ月 前 | 0

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How to compare element between two numbers
Like Rik, I am not sure what comparison you are doing based on your terse description. Maybe this, but it doesn't match your st...

3ヶ月 前 | 0

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[mexFunction in Matlab] printf() function in C code
How you have it written should work, except maybe replace printf( ) with mexPrintf( ). Also, depending on your compiler and sett...

3ヶ月 前 | 0

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How to return the outputs of mexFunction() in Matlab?
Put this at the bottom of your code. But remember that if you call mexErrMsgTxt your mex function will exit immediately and not ...

3ヶ月 前 | 1

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Error: Matrix dimensions must agree
You could use V(2:end) or V(1:end-1) instead of V in that line. Or maybe average the two.

3ヶ月 前 | 0

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Write a MATLAB code to estimate the exponential function. Inputs should be x and n. The outputs must include approximate value, true value, error, absolute error, and relative error.
Put your function code for e_to_x() in a separate file called e_to_x.m somewhere on the MATLAB path. Then put your other code t...

3ヶ月 前 | 0

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Kindly give me the Matlab code for simplex method?
Use the MATLAB supplied function fminsearch.

3ヶ月 前 | 0

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