Community Profile # creepydog

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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...

3 months 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 + ...

3 months 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...

3 months ago

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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...

3 months ago

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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:...

3 months 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...

1 year ago | 1 answer | 1

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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...

1 year ago | 1 answer | 1

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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...

2 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...

2 years ago | 2 answers | 0

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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...

2 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...

2 years ago | 2 answers | 1