# creepydog

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Question

Power operator (^) precedence levels and evaluation order

While 2^-1^-2 returns 4, which indicates a "left to right" evaluation order (as it is common in many programming languages), ...

4 months ago | 1 answer | 2

### 1

answerQuestion

Enabled Subsystem does not reliably disable

The Simulink model shown in the screenshot does not behave as I expect, and I would like to understand the reason. All blocks...

6 months ago | 1 answer | 1

### 1

answerSolved

Remove the polynomials that have positive real elements of their roots.

The characteristic equation for a dynamic system is a polynomial whose roots indicate its behavior. If any of the roots of the p...

2 years ago

Solved

Summing digits

Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

2 years ago

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

2 years ago

Solved

Interpolator

You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

2 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:...

2 years ago

Question

Rank of symbolic matrix is wrong (but too small, not too large)

I get a wrong result using the sym/rank command. I'm aware of the limitations of this command as it does not simplify expression...

3 years ago | 1 answer | 1

### 1

answerQuestion

Simulation runs fine despite error (index out of bounds)

Hello. Summary For my simple model, Simulink (R2020b) throws an error during Model Update, but afterwards allows me to simulat...

3 years ago | 1 answer | 1

### 1

answerNumber of necessary time steps to handle a Zero-Crossing?

First of all: Thank you for your efforts! Your guesses are similar to my guesses. ;-) I've been aware of the fact that my minim...

4 years ago | 0

Question

Number of necessary time steps to handle a Zero-Crossing?

Over the years I have observed that Simulink usually uses 3 time steps to handle a zero-crossing, but in some cases it uses only...

4 years ago | 2 answers | 0

### 2

answersWhat do TzL & TzR mean in Simulink Debugger ?

I've seen these when debugging zero-crossings. So "z" might mean "zero-crossing", "L" and "R" might be "left" (before) and "righ...

4 years ago | 0

Question

Integrator State Port: Why is its use restricted?

Hello. I'd like to know why the use of the Integrator Block's State Port is restricted (and I have some more questions, see bel...

4 years ago | 2 answers | 1

### 2

answersQuestion

How can I get the figure handle of a Scope window programmatically, given only the Scope block's full path name?

I've got the full path name of a Scope *block* as it is returned by find_system(...), e.g. 'myModel/Scope1'. In order to mani...

7 years ago | 2 answers | 0