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Fun with matrix
Disign a sample matrix as given in the test cases

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Find the remainder - 02
Given an array of integers, find the remainder when the summation of all the elements is divided by N

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Logic 7

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Siren frequency and Doppler effect.
The Doppler effect is described on OpenStax University Physics at https://openstax.org/books/university-physics-volume-1/pages/1...

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Poly2mask, drawpolygon or patch
Recently, I tried to plot a polygon in matlab, and I found there is a lot of embedded function that can be used. However, some f...

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Easy Sequences 33: Web Trapped Ant
An ant is trapped on a spider web inside a can with open top. The can has a radius and height . A spider sitting on the outside...

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Arrange the names in alphabetical order (2)
Arrange the list of names in alphabetical order, following the German standard <https://de.wikipedia.org/wiki/Alphabetische_Sort...

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Arrange the names in alphabetical order (1)
Arrange the list of names in alphabetical order. The _original_ 'alphabetical order', that is: from α and β all the way throug...

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Total resistance of a network of resistors in series and parallel
What is the total resistance of a network of resistors in series and in parallel? A matrix R contains the resistances (in Ohm) ...

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Find the smallest integer m such that n divides m!
Write a function that takes an integer and finds the smallest integer whose factorial is divisible by . For example, if , then...

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Compute the Sequence of the Day
A sequence starts with 1 and 2, and each subsequent term is the sum of the digits of the product of the previous two terms. As a...

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Identify Ruth-Aaron numbers
After Hank Aaron hit his 715th home run and passed Babe Ruth’s total of 714, Carl Pomerance noticed that the union of the prime ...

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Compute the effective conductivity of a heterogeneous aquifer
Slow flow through soil or another porous medium follows Darcy’s law, which relates the flow of water to the gradient in piezome...

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Compute an improper integral of a ratio of algebraic functions

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Add 100

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Rotation Matrix to Euler Angles
Given a rotation matrix, generate the Euler Angles as output [phi,theta,psi]. [phi is a rotation around X-axis, theta is rotatio...

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Output the Montgomery Form of the Input Matrix

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Current through resistor
Three resistors (R2, R3, R4) are connected in parallel as shown in the figure. If this combination is connected in series with ...

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Deduce Equations for Simplified Interstellar Doppler Effect ✨
R2-D2 and C-3PO are friends. R2-D2 boards a spacecraft bound to a galaxy far, far away, but is always in contact with C-3PO, als...

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Negative without '-'
Simple: return a negative number without using the '-' sign. Thanks to Problem <https://www.mathworks.com/matlabcentral/cody/...

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Array Concatenation (2)
Given two matrices, a and b, concatenate the two matrices vertically, i.e., the number of rows of the result should be equal to ...

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Array Concatenation (1)
Given two matrices, a and b, concatenate the two matrices horizontally, i.e., the number of columns of the result should be equa...

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Function substitution (2)
Evaluate the function for the given values of the variables N and t

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Function substitution (1)
Evaluate the function for the given values of the variables N and t

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Remainder
Use MATLAB help to find a suitable built-in function to find the remainder of dividing any non-negative integer, x, by 7. For in...

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Nearest integer
Use MATLAB help to find a suitable built-in function to approximate a given number to the nearest integer. For instance, 9.25 is...

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Absolute value
Use MATLAB help to find a suitable built-in function to find the absolute (positive) value of a given number. For instance |−5| ...

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Travel time
Calculate the time (in hours) it takes a car traveling at a given uniform speed of s km/hour to travel a distance of d km. For i...

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Circle area
Calculate the area of a circle given its radius, r. For instance, if r =3.5, the answer should be approximately 38.48

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Average of five numbers
Find the average of a set of five numbers {x1,x2,x3,x4,x5}

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