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Convert Hexavigesimal to Decimal
NASA (Ned’s Alien-Spying Agency) have made contact with a 13-fingered race from the planet Genai. Naturally, Ned’s shadowy opera...

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Government of the Neds, by the Neds, for the Neds - Distribute the Nedsburg City Councilors
The city of Nedsburg consists of several islands, the number of which changes regularly, due to tectonic forces, shoddy civil en...

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Further help with 1/2 car model
@Sarah, you're doing great and you're almost there. Let me clarify the signal routing for you because this is a common point of ...

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EEG bandpass filtering locutoff and hicutoff syntax
Hi @Zhuo, I have edited my comments after reviewing the sources provided by @Elias. Please see the latest response below. It ...

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Calculating Student Grades
The matrix grades contains raw grades for 7 students who took your course. Each row represents a different student. The first 7 ...

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(Linear) Recurrence Equations - Generalised Fibonacci-like sequences
This problem is inspired by problems <http://uk.mathworks.com/matlabcentral/cody/problems/2187-generalized-fibonacci 2187>, <htt...

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Is X a Fibonacci Matrix?
In honor of Cleve's new blog and post: <http://blogs.mathworks.com/cleve/2012/06/03/fibonacci-matrices/> Is X a Fibonacci ...

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Fibonacci Decomposition
Every positive integer has a unique decomposition into nonconsecutive Fibonacci numbers f1+f2+ ... Given a positive integer n, r...

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How many Fibonacci numbers?
Find the number of unique Fibonacci numbers (don't count repeats) in a vector of positive integers. Example: x = [1 2 3 4...

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How to easily find Simscape Electrical blocks equivalent to previous Specialized Power System blocks?
Hi @Juan, It would not be easy process after sharing your concerns about migrating your *grid-forming BESS model* from *Speci...

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Model meat through a freezer
Hi @Jason, It is finally good to see that you got the constant mass approach working. So about modeling the chicken actually ...

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Square voltage source and inductors.
Hi @Michel, I took a look at your circuit diagram — The reason you can’t connect the square-wave (Pulse Generator) output to ...

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in my simulink,used for voltage stabilization which used dvr in flc,here the output have some issues the vload and vinj? so can u help me, vload would be proper sine wave?
Hi @Faria, I went though all your recent comments and screenshots, looking at latest simulink block diagrams, you have starte...

9 meses hace | 1

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Write c^3 as sum of two squares a^2+b^2
write c^3 as sum of two squares a^2+b^2. a and b must be integer and greater than zero. For example 5^3 = 2^2 + 11^2 5...

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Is it really a 5?
A number containing at least one five will be passed to your function, which must return true or false depending upon whether th...

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Pernicious Anniversary Problem
Since Cody is 5 years old, it's pernicious. A <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer w...

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I am trying to model a 1/2 car model in Simulink but it has heave and no pitch.
Hi @Sarah, Looking at your model diagram, I can see you've got the basic structure set up nicely with separate front and rear...

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radar IWR6843ISK
Hi @muhammed kadir, I can guide you which will help you out over here. So, it sounds like you already have the *right hardwar...

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Why am I getting a near 0 current in the flyback converter?
Hi @Carlos, After going through your plots and comments, I would like to pinpoint some important points which are critical an...

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in my simulink,used for voltage stabilization which used dvr in flc,here the output have some issues the vload and vinj? so can u help me, vload would be proper sine wave?
Hi @Faria, I looked closely at your Simulink setup and the waveforms you shared, after doing thorough research — the noisy *V...

10 meses hace | 1

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Typo in Bicycle Kinematics/Steering Angle Equation?
Hi @Pablo, Good eye — that last row in the bicycle kinematics matrix does look off. After checking the math, it seems the doc...

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Extra safe primes
Did you know that the number 5 is the first safe prime? A safe prime is a prime number that can be expressed as 2p+1, where p is...

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Find the nearest prime number
Happy 5th birthday, Cody! Since 5 is a prime number, let's have some fun looking for other prime numbers. Given a positive in...

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Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

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MATLAB Counter
Write a function f = counter(x0,b) to construct a counter handle f that counts with an initial value x0 and a step size b. E...

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Is the Point in a Triangle?
Check whether a point or multiple points is/are in a triangle with three corners Points = [x, y]; Triangle = [x1, y1; x2, y...

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Initial parameter settings for the simulation model with DFIG
Hi @Thuong, Thanks for sharing your comments and the screenshot from your Powergui Load Flow run. I reviewed the image ...

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Missing five
Convert decimal numbers to a base-9 notation missing the digit *5* <<http://www.alfnie.com/software/missing5.jpg>> Too man...

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Polarisation
You have n polarising filters stacked one on top of another, and you know each axis angle. How much light gets passed through th...

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Octoberfest festival
A group of students decided to visit Octoberfest festival. First they ordered one beer, then after half-hour they taken one more...

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