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**Content Feed**

Solved

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...

meer dan 4 jaar ago

Solved

Basic electricity in a dry situation

⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ ⚡ &#...

meer dan 4 jaar ago

Solved

Pentagonal Numbers

Your function will receive a lower and upper bound. It should return all pentagonal numbers within that inclusive range in ascen...

meer dan 4 jaar ago

Solved

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...

meer dan 4 jaar ago

Solved

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...

meer dan 4 jaar ago

Solved

Energy of a photon

*⚛ ☢ ⚛ ☢ ⚛ ☢ ⚛* Given the frequency F of a photon in giga hertz. Find energy E of this...

meer dan 4 jaar ago

Solved

How to subtract?

*± ± ± ± ± ± ± ± ± ± ±* * Imagine you need to subtract one...

meer dan 4 jaar ago

Solved

Fahrenheit to Celsius using multiple statements

Given a Fahrenheit value F, convert to a Celsius value C. While the equation is C = 5/9 * (F - 32), as an exercise use two state...

bijna 7 jaar ago

Solved

Data Regularization

Provided is an m-by-n integer data matrix A whose elements are drawn arbitrarily from a set *S* = [1,2,3,...,S] for any large in...

bijna 7 jaar ago

Solved

Which values occur exactly three times?

Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

bijna 7 jaar ago

Solved

Compute the step response of a DC motor

Compute the step response of a DC motor shown below <<http://blogs.mathworks.com/images/seth/cody/dc-motor.png>> The param...

bijna 7 jaar ago

Solved

Model a simple pendulum

Model a simple pendulum of length 200cm with bob of mass 100g and plot the position in degrees. The pendulum starts at 30 degree...

bijna 7 jaar ago

Solved

Produce a Fibonacci sequence

Construct a diagram that generates the Fibonacci sequence: 1, 1, 2, 3, 5, 8, 13, 21, 34.....up to 377 The Fibonacci sequ...

bijna 7 jaar ago

Solved

Make a low pass filter

Make a first order low pass filter that will filter out the high frequency oscillations for the given input signal. The cut-off ...

bijna 7 jaar ago

Solved

Model a falling body

An object is falling freely from a height of 22 meters under the force of gravity. <<http://blogs.mathworks.com/images/seth/c...

bijna 7 jaar ago

Solved

Model a mass spring system

Model an ideal mass-spring system shown below where the spring is initially stretched. <<http://blogs.mathworks.com/images/se...

bijna 7 jaar ago

Solved

Counting pulses in a signal

Count the number of pulses that are the result of summing each pulse generator block. Pulse Generator blocks produce a recurr...

bijna 7 jaar ago

Solved

Add damping to a mass spring system

Model an ideal mass-spring-damper system shown below where the spring is initially stretched. <<http://blogs.mathworks.com/im...

bijna 7 jaar ago

Solved

Make a full wave rectifier

Produce a full wave rectifier waveform for the given sine wave source. For a sine wave input, the output of the full wave rec...

bijna 7 jaar ago

Solved

Make a half wave rectifier

Produce a signal that outputs the given sine wave source when it is greater than zero and outputs zero when it is less than zero...

bijna 7 jaar ago

Solved

Produce a sine wave

Produce a sine wave with amplitude 3: <<http://blogs.mathworks.com/images/seth/cody/sine-eqn.png>>

bijna 7 jaar ago

Solved

Add offset to a signal

Produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/add-offset-eqn.png>> You should see a downward...

bijna 7 jaar ago

Solved

Add a block to a model

Produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/add-block-eqn.png>> In this case, the slope of...

bijna 7 jaar ago

Solved

Produce a cosine wave

Produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/cosine-eqn.png>>

bijna 7 jaar ago

Solved

Connect blocks in a model

Connect the blocks in the model to produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/connect-blocks...

bijna 7 jaar ago

Solved

Nearest Numbers

Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

ongeveer 7 jaar ago

Solved

Simple equation: Annual salary

Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

ongeveer 7 jaar ago

Solved

Who Has the Most Change?

You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

ongeveer 7 jaar ago

Solved

Circle area using pi

Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

ongeveer 7 jaar ago

Solved

Find the alphabetic word product

If the input string s is a word like 'hello', then the output word product p is a number based on the correspondence a=1, b=2, ....

bijna 10 jaar ago