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Daniel


Last seen: 2 months ago |  Active since 2023

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statistics and machine learning toolbox not activated in my trial license even after installing a new trial.
License checkout failed. License Manager Error -10 Your license for Statistics_Toolbox has expired. If you are not using a t...

2 months ago | 1 answer | 0

1

answer

Question


I am having a problem implementing ode45 in a appdesigner code as well as using the uigetfile and readtable functions to read data from a file into appdesigner.
When i run the appdesigener app, the integartion gives a warning from the 82nd integartion to the last integration. Moreover i a...

7 months ago | 0 answers | 0

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Question


I am having trouble reading textfile data into my app using uigetfile and readtable functions in appdesigner. Kindly assist
I am using a pushbutton.userdata option to read the textfiles and i am not sure if thats the right way to do it. Once the data i...

8 months ago | 1 answer | 0

1

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Question


when using ode45 with the for loop, should I put the initial conditions inside or outside the for loop?
Where should I placde the initial conditions for the ODE when using ode45 and the for loop to solve my system of ODEs? I have no...

8 months ago | 1 answer | 0

1

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Question


Why does my ode45 return a solution with the first values as zero despite I supplying non-zero initial conditions?
In the following code to simulate Pond volume and water temperature changes the code returns the solution (Y) with the first val...

8 months ago | 3 answers | 0

3

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Question


I want to know if my code is well written based on a set of criteria.
To estimate DIP_s, it is necessary to approximate the expected DIP concentration within the current time step used in the integr...

8 months ago | 0 answers | 0

0

answers

Question


one of the terms "Rho_net" on the RHS of an set is varying with time over the tspan. How do I implement the set of the ODEs such that the term updates at every time step?
I have been trying the code as below but it returns the error "dYdt = @(t, Y) [ode1(t, Y); ode2(t, Y)] must return a column vect...

9 months ago | 2 answers | 0

2

answers

Question


Please help to solve the error in evaluating a system of odes using ode45
The following code keeps on returning the following error. Error using odearguments @(T,Y)[ODE1(T,Y);ODE2(T,Y)] returns a vec...

9 months ago | 1 answer | 0

1

answer

Solved


Calculate a Damped Sinusoid
The equation of a damped sinusoid can be written as |y = A.ⅇ^(-λt)*cos(2πft)| where |A|, |λ|, and |f| ...

1 year ago

Solved


Solve a System of Linear Equations
Example: If a system of linear equations in x₁ and x₂ is: 2x₁ + x₂ = 2 x₁ - 4 x₂ = 3 Then the coefficient matrix (A) is: 2 ...

1 year ago

Solved


Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

1 year ago

Solved


Find the Oldest Person in a Room
Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

1 year ago

Solved


Convert from Fahrenheit to Celsius
Given an input vector F containing temperature values in Fahrenheit, return an output vector C that contains the values in Celsi...

1 year ago

Solved


Calculate Amount of Cake Frosting
Given two input variables r and h, which stand for the radius and height of a cake, calculate the surface area of the cake you n...

1 year ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

1 year ago