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Question: Create a function that takes a generic matrix, x, and finds the smallest value in the matrix.The function must work for matrices of any size and dimension.

Hint: First reshape the input x array into a 1D vector and work with that inside your function.

Question: Create a function that takes a generic matrix, x, and finds the smallest value in the matrix.The function must work for matrices of any size and dimension.

Hint: First reshape the input x array into a 1D vector and work with that inside your function.

ungefär 2 månader ago | 1

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How to wrap on overflow when transfer a double to integer

You could use: y = mod(x,double(intmax('uint16'))+1); But, if x is too large so that eps(x) > 1 the result might be somewhat m...

How to wrap on overflow when transfer a double to integer

You could use: y = mod(x,double(intmax('uint16'))+1); But, if x is too large so that eps(x) > 1 the result might be somewhat m...

ungefär 2 månader ago | 1

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Answered

Finding all multiples of 5 or 7 from 1 to 10000 with a loop.

An basic outline of the for loop to get you started: n = 10000; % the limit of the for loop x57a = []; % initialize the result...

Finding all multiples of 5 or 7 from 1 to 10000 with a loop.

An basic outline of the for loop to get you started: n = 10000; % the limit of the for loop x57a = []; % initialize the result...

ungefär 2 månader ago | 0

Answered

What type of function Matlab has help to construct symmetric matrix?

If no specific properties needed, then you could use n = the desired size M = rand(n); M = M + M';

What type of function Matlab has help to construct symmetric matrix?

If no specific properties needed, then you could use n = the desired size M = rand(n); M = M + M';

ungefär 2 månader ago | 1

Answered

Matrix dimensions must agree error in FOR loop

This comparison: z == 'no' compares z to a 1x2 array. And this comparison z == 'yes' compares z to a 1x3 array. So you are...

Matrix dimensions must agree error in FOR loop

This comparison: z == 'no' compares z to a 1x2 array. And this comparison z == 'yes' compares z to a 1x3 array. So you are...

ungefär 2 månader ago | 0

Answered

Calling C functions using MATLAB.

This: void (*camp)(double x, double *y, int n, double *f) is not a function as you claim. It is a pointer to a function that ...

Calling C functions using MATLAB.

This: void (*camp)(double x, double *y, int n, double *f) is not a function as you claim. It is a pointer to a function that ...

ungefär 2 månader ago | 0

Answered

Can't figure out what I am doing wrong. Looking to find square root using the equation given x=(x+x/a)/2. I also feel like I am not making use of the approximation errors ea and es.

You can't do these assignments in this order: x_old=x; ea=((x-x_old)/x)*100; The first one will cause the second one ...

Can't figure out what I am doing wrong. Looking to find square root using the equation given x=(x+x/a)/2. I also feel like I am not making use of the approximation errors ea and es.

You can't do these assignments in this order: x_old=x; ea=((x-x_old)/x)*100; The first one will cause the second one ...

2 månader ago | 1

Answered

Coupled second order ODE with three variables

Problems: 1) Units. You really should annotate ALL of your constants with descriptions and units so that the reader knows what...

Coupled second order ODE with three variables

Problems: 1) Units. You really should annotate ALL of your constants with descriptions and units so that the reader knows what...

2 månader ago | 0

Answered

How to split 3d matrix into sub-2d matrices?

I agree with Bob ... just using indexing downstream in your code will be much easier. If you really do need them in separate va...

How to split 3d matrix into sub-2d matrices?

I agree with Bob ... just using indexing downstream in your code will be much easier. If you really do need them in separate va...

2 månader ago | 1

Answered

ODE45 to solve vector ode

You have a six element state vector. The y(1) and y(2) coming into your derivative function are not position and velocity vecto...

ODE45 to solve vector ode

You have a six element state vector. The y(1) and y(2) coming into your derivative function are not position and velocity vecto...

2 månader ago | 1

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Answered

code in script called swap

You can adapt the three lines of code found here: https://www.tutorialspoint.com/learn_c_by_examples/swapping_two_numbers_using...

code in script called swap

You can adapt the three lines of code found here: https://www.tutorialspoint.com/learn_c_by_examples/swapping_two_numbers_using...

2 månader ago | 0

Answered

Extract values common to 5 columns

Hint: Look at the result of diff(A,[],2). If all the values in a row are equal, what would you expect to be in the result of th...

Extract values common to 5 columns

Hint: Look at the result of diff(A,[],2). If all the values in a row are equal, what would you expect to be in the result of th...

2 månader ago | 0

Answered

Element-wise power resulting in imaginary values and NAN

Looks like the problem calculation is being done in the background as exp(B.*log(A)), but I don't know why it does this sometime...

Element-wise power resulting in imaginary values and NAN

Looks like the problem calculation is being done in the background as exp(B.*log(A)), but I don't know why it does this sometime...

2 månader ago | 0

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Answered

How to make a loop that writes in a new vector only values that meet a condition?

Assuming you don't want the first value since there is no previous value to compare to: x = [false, diff(VPo) > 0]; VPoF = VPo...

How to make a loop that writes in a new vector only values that meet a condition?

Assuming you don't want the first value since there is no previous value to compare to: x = [false, diff(VPo) > 0]; VPoF = VPo...

2 månader ago | 0

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Answered

Out of Memory error when removing columns of a big matrix .

What are you doing with the matrix A downstream in your code? Even if the column removal worked, seems like you still might hav...

Out of Memory error when removing columns of a big matrix .

What are you doing with the matrix A downstream in your code? Even if the column removal worked, seems like you still might hav...

2 månader ago | 0

Answered

Choose random element of vector

k = sort(randperm(numel(vector),2)); x1 = vector(k(1)); x2 = vector(k(2)); This assumes that you always want to be able to pi...

Choose random element of vector

k = sort(randperm(numel(vector),2)); x1 = vector(k(1)); x2 = vector(k(2)); This assumes that you always want to be able to pi...

2 månader ago | 1

Answered

Angle betwen two 3d vectors in the range 0-360 degree

E.g., here is one method: function a = vecangle360(v1,v2,n) x = cross(v1,v2); c = sign(dot(x,n)) * norm(x); a = atan2d(c,dot...

Angle betwen two 3d vectors in the range 0-360 degree

E.g., here is one method: function a = vecangle360(v1,v2,n) x = cross(v1,v2); c = sign(dot(x,n)) * norm(x); a = atan2d(c,dot...

2 månader ago | 0

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Answered

Internal variables not calculated

Maybe the behavior you are looking for is nested functions. Instead of a function at the end of a script, you have a function w...

Internal variables not calculated

Maybe the behavior you are looking for is nested functions. Instead of a function at the end of a script, you have a function w...

2 månader ago | 1

Answered

Internal variables not calculated

You didn't declare those variables global in the caller. You only have them global in the function. Add the global statements ...

Internal variables not calculated

You didn't declare those variables global in the caller. You only have them global in the function. Add the global statements ...

2 månader ago | 1

Answered

how can i resolve this equation Runge kutta method

You've got a 2nd order equation, so that means you need a 2-element state vector. The two states will be y and y'. All of your...

how can i resolve this equation Runge kutta method

You've got a 2nd order equation, so that means you need a 2-element state vector. The two states will be y and y'. All of your...

2 månader ago | 0

Answered

Appending to an array/vector

We would need to see your code to give a more specific answer, but the general outline is to index into your result vector. E.g....

Appending to an array/vector

We would need to see your code to give a more specific answer, but the general outline is to index into your result vector. E.g....

2 månader ago | 0

Answered

what wrong in my code when i use ode 45,and what the error are mean

Try changing this [t,y]=ode45('Mass_On_Stick_012345678',tSpan,y0,opts,Parameter); to this [t,y]=ode45(@(t,y)Mass_On_Stick_012...

what wrong in my code when i use ode 45,and what the error are mean

Try changing this [t,y]=ode45('Mass_On_Stick_012345678',tSpan,y0,opts,Parameter); to this [t,y]=ode45(@(t,y)Mass_On_Stick_012...

2 månader ago | 1

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Answered

dgemv produces only zero vectors as results

Two things: 1) All of the integers that you are passing into BLAS/LAPACK functions should be the same. Why are you using ptrdi...

dgemv produces only zero vectors as results

Two things: 1) All of the integers that you are passing into BLAS/LAPACK functions should be the same. Why are you using ptrdi...

2 månader ago | 1

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Answered

Create an .m file

To create an .m file for a function named randint, you can do this at the command line as long as the default directory is your ...

Create an .m file

To create an .m file for a function named randint, you can do this at the command line as long as the default directory is your ...

2 månader ago | 0

Answered

How to read a binary file with below description?

E.g., fname = the name of your binary file fp = fopen(fname,'rb'); k = fread(fp,6,'int16'); y_start = k(1); y_end = k(2);...

How to read a binary file with below description?

E.g., fname = the name of your binary file fp = fopen(fname,'rb'); k = fread(fp,6,'int16'); y_start = k(1); y_end = k(2);...

2 månader ago | 0

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Answered

Output argument is not assigned on some execution paths.

What happens if you change this elseif imbalance <= 0 to this else

Output argument is not assigned on some execution paths.

What happens if you change this elseif imbalance <= 0 to this else

2 månader ago | 0

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Answered

Does this character vector match any of the following character vectors?

You could use cell arrays. E.g., use ismember(currentMonth,{'June','July','August'}) instead of strcmp(currentMonth,'June'||...

Does this character vector match any of the following character vectors?

You could use cell arrays. E.g., use ismember(currentMonth,{'June','July','August'}) instead of strcmp(currentMonth,'June'||...

2 månader ago | 0

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Answered

I am getting wrong answer for factorial(22)

R2016a PCWIN64: >> a1 = factorial(22) a1 = 1.124000727777608e+21 >> b = (sqrt(2*pi*22))*(22^22/exp(22)) b = 1.11...

I am getting wrong answer for factorial(22)

R2016a PCWIN64: >> a1 = factorial(22) a1 = 1.124000727777608e+21 >> b = (sqrt(2*pi*22))*(22^22/exp(22)) b = 1.11...

2 månader ago | 1

Answered

generating random values with condition

You could use this FEX submission by Roger Stafford for each 4 number block: https://www.mathworks.com/matlabcentral/fileexchan...

generating random values with condition

You could use this FEX submission by Roger Stafford for each 4 number block: https://www.mathworks.com/matlabcentral/fileexchan...

2 månader ago | 0