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# creepydog

Last seen: ungefär 2 månader ago Active since 2017

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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...

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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 + ...

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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...

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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...

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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:...

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...

mer än ett år ago | 1 answer | 1

### 1

Question

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...

nästan 2 år ago | 1 answer | 1

### 1

Number 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...

mer än 2 år 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...

mer än 2 år ago | 2 answers | 0

### 2

What 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...

mer än 2 år 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...

mer än 2 år ago | 2 answers | 1