# maiaL

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Question

Discrepancies between single and double precision sum over time

I attempted to isolate and better understand an issue happening in a more complex model. It came down to an internal "clock" we ...

2 years ago | 1 answer | 1

### 1

answerSolved

Rescale Scores

Each column (except last) of matrix |X| contains students' scores in a course assignment or a test. The last column has a weight...

3 years ago

Solved

Calculate Inner Product

Given two input matrices, |x| and |y|, check if their inner dimensions match. * If they match, create an output variable |z|...

3 years ago

Solved

Find the Best Hotels

Given three input variables: * |hotels| - a list of hotel names * |ratings| - their ratings in a city * |cutoff| - the rat...

3 years ago

Solved

Crop an Image

A grayscale image is represented as a matrix in MATLAB. Each matrix element represents a pixel in the image. An element value re...

3 years ago

Solved

Plot Damped Sinusoid

Given two vectors |t| and |y|, make a plot containing a blue ( |b| ) dashed ( |--| ) line of |y| versus |t|. Mark the minimum...

3 years ago

Solved

Longest run of consecutive numbers

Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

3 years ago

Solved

Calculate BMI

Given a matrix |hw| (height and weight) with two columns, calculate BMI using these formulas: * 1 kilogram = 2.2 pounds * 1 ...

3 years ago

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| ...

3 years ago

Solved

Solve a System of Linear Equations

*Example*: If a system of linear equations in _x₁_ and _x₂_ is: 2 _x₁_ + _x₂_ = 2 _x₁...

3 years 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,....

3 years 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...

3 years 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 C...

3 years 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 y...

3 years 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:...

3 years ago

Where do the thermal properties of the generic battery model come from?

The equations used in this model can be found in the documentation: https://www.mathworks.com/help/physmod/sps/powersys/ref/batt...

3 years ago | 1

Onda seno (Sine wave) at Simulink

Se entendi direito seu problema, você pode tentar algo assim (If I understood your problem correctly, you can try something like...

3 years ago | 0

Matlab spring equation question

The way I understand the problem, you need an array "x" as the result of this program, which will have the same size as the arra...

4 years ago | 0

How do I increase the font size of MATLAB Document Help?

Ctrl + '+' for increasing and Ctrl + '-' for decreasing. Or alternatively, press and hold Ctrl and roll your mouse wheel. Should...

4 years ago | 1

Matlab graphs not showing

Nothing is plotted because Jx is all NaN's, so something is wrong with your calculations.

4 years ago | 0

| accepted

How to find value of X when Y reaches maximum value

Not sure what kind of output you want, but one way would be to get the derivative of your y(x) function. When it's "zero", it'...

4 years ago | 0

| accepted

SIMULINK step, ramp "Start time" on command

A possible solution would be to use an enable subsystem, where the enable signal would be the result of checking the pressure se...

4 years ago | 0

| accepted

Finding Commented blocks programmatically

what about adding 'Commented','on' and 'Commented','through' to the find_system() arguments?

4 years ago | 0

| accepted

Simulink - Interpreted Matlab Function: How can I define that I want two inputs to my function?

The Interpreted MATLAB function block only accepts one input afaik. Would it be possible to use a MATLAB function block instead?...

4 years ago | 0

Greek character in script turned to a square or a question mark - any ideas why?

You can refer to this if you want to print greek and other special characters. But I don't think you can have these characters w...

4 years ago | 0

How to Delay matlab function block?

Have you tried Delay blocks?

4 years ago | 0

| accepted

Question

Extremely slow compilation time in referenced model (Simulink)

I have a Simulink model (model1) which has a model reference to model2. Model2 compilation time (checked with sldiagnostics) is...

4 years ago | 1 answer | 2

### 1

answerIs there a way of externally defining the initial output of a Variable Transport Delay?

Not sure if I understood the question clearly, but you could simply define a ini_output value in the base workspace: ini_output...

4 years ago | 0

Algebraic state in algebraic loop

You could try adding a Delay block before the input to the derivative block. I don't know if the signal in your actual model i...

4 years ago | 0

List of all subsystem(include Model reference) in each layer from model

This could be a starting point: SubsystemsList=find_system('mdlName','SearchDepth',20,'LookUnderMasks','on','FollowLinks','on',...

4 years ago | 0