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Trond Oesten


Active since 2015

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How to find the double trapezoidal integral of a function with 3 variables
Hi, I have a function with 3 variables that I want to find the trapezoidal double integral of. My answer should be dependent ...

9 years ago | 1 answer | 0

1

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How to find the the boundery of a 3D plot, and how to find the coordinates of the bounderys
Hi, I have made a 3D plot and I want to find some values on the x and y axis. I want to find the 4 points, where my function no...

9 years ago | 0 answers | 0

0

answers

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how to find the sum of a function with 2 variables
Hi, I'm trying to find the sum of the function likelihhod, after the values from smaller is inserted. Then I want to integrat...

9 years ago | 1 answer | 0

1

answer

Question


How to compute the hessian matrix, when I'm using a Nelder-Mead maximum optimization of a function
Hi, I'm performing a nelder-mead optimization of a function (f), and I want to calculate the coefficient of variance matrix (...

9 years ago | 1 answer | 0

1

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How to pick values that is below a certain value in a matrix/vector
Hi, I have a vector (A) that contains 10 values. E.g. A = [1 5 9 4 6 2 1 7 6 4] What I want is to pick values from the...

9 years ago | 1 answer | 0

1

answer

Question


Triple integral of a function, when one of the integration limits is undefined
Hi, I have a function with 3 variables that I want to integrate, but one of my integration limit is undefined, and I want my...

9 years ago | 0 answers | 0

0

answers

Question


How to integrate between a defined and an undefined limit
Hi, I have performed an double integration of a function containing 3 variables. The function is now only dependent on 1 vara...

9 years ago | 1 answer | 0

1

answer

Question


How to do a double integral on a function with 3 variables, so the answer is dependent on the 3 variable
Hi, I have a function with 3 variables. I want to do a double integral on my function so it's dependent on the last variable....

9 years ago | 1 answer | 0

1

answer

Question


How to do a double integration of a multivariate normal probability density function
Hi, I'm trying to do a double integral on a nultivariate normal probability density function. The two variables I want to int...

9 years ago | 2 answers | 0

2

answers

Question


How to pick values in a matrix due to values in another matrix
Hi, I have two data sets (f and g) with 5 values in each and by using the tiedrank command I have ranked the lowest to the hi...

9 years ago | 2 answers | 0

2

answers

Question


How to find the correlation between two random numbers
Hi, I want to give a specific correlation between two random numbers. I am using them to find the inverse lognormal distribut...

9 years ago | 1 answer | 0

1

answer

Question


How to find average values inside a matrix
Hi, I'm trying to find the average values inside a matrix, [N 1]. I'm using N simulations and for each simulation I get ...

10 years ago | 1 answer | 0

1

answer

Question


Values used to run a for loop
Hi, I'm trying to model the strength of a cable that consist of N wires, subjected to strain loading (epsilon). To find the str...

10 years ago | 1 answer | 0

1

answer

Question


How to sample values from inner for loop vector to an outer for loop vector
Hi, I'm trying to model the difference of strength in a cable consisting of N wires in a cable due to different strain value...

10 years ago | 1 answer | 0

1

answer