# Allen

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App Building, Fourier Analysis and Filtering, Signal and Data Processing, Seismology, Mechanical Engineering

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Solved

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 ...

10 months ago

Solved

Calculate Parallel Resistance

Three resistors connected in parallel have resistances R1, R 2, and R 3, respectively. Return the total resistance R total of ...

10 months ago

Solved

Resistance of a light bulb

The current through two identical light bulbs connected in series is C Amperes. The total voltage across both bulbs is V Volts....

10 months ago

Solved

Force and Motion 3

Two robots push on a large object in the same direction. One robot pushes with a force of F1 Newtons and the other with a force...

10 months ago

Solved

Force and Motion 2

Two robots are pulling on an object in opposite directions. One robot pulls with a force of F1 Newtons and the other with a forc...

10 months ago

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Must be in the front row...

You are given a matrix followed by a single number. Your object is to write a script that will shift the matrix around so that ...

1 year ago

Solved

Write a function man that takes a row vector v and returns a matrix H as follows..

Write a function called man that takes a row vector v as an input and returns a matrix H whose first column consist of the eleme...

1 year ago

Solved

Too Many Zeros, Dump Them!

Sometimes when I create a matrix, I use this syntax: a = zeros(1000,1000); But when the function ends, I find that I don'...

1 year ago

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Replace Nonzero Numbers with 1

Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

1 year ago

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Matrix multiplication across rows

Given matrix m, return matrix n such that, rows of n are result of multiplication of the rows of the input matrix Example ...

1 year ago

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A matrix of extroverts

Now that the introverts have had their script, the extroverts spoke up (naturally!) and demanded one as well. You will be given...

1 year ago

Solved

Enlarge array

Given an m-by-n numeric array (A) and a 1-by-2 vector (sz) indicating the dimensions [p q] to enlarge each element, return an (m...

1 year ago

Solved

Remove entire row and column in the matrix containing the input values

Remove the entire row and column from the matrix containing specific values. The specified value can be a scalar or a vector. Fo...

1 year ago

Solved

subtract central cross

Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

1 year ago

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Given a matrix, swap the 2nd & 3rd columns

If a = [1 2 3 4; 1 2 3 4; 1 2 3 4; 1 2 3 4]; then the result is ans = 1 3 2 4 1 3 2...

1 year ago

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Some Assembly Required

The input to this function is a matrix of real numbers. Your job is to assemble the rows of the matrix into one large row that ...

1 year ago

Solved

Calculate a modified Levenshtein distance between two strings

Inspired by the Cody problem found here. The Levenshtein distance is a charater-based string metric used to measure the differe...

1 year ago

Solved

Calculate compression ratio of engine

Calculate compression ratio of engine given compression volume of cylinder(Vc), piston stroke(s) and valve diameter(d)

1 year ago

Solved

Calculate Engine Power

Calculate Engine Power (P) in kW given the values of Torque(M) in Nm and Engine Speed(n) in rpm

1 year ago

Solved

Is A the inverse of B?

Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

2 years ago

Solved

Rotate Matrix @180 degree

Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

2 years ago

Solved

Square root

Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

2 years ago

Solved

Calculate the average value of the elements in the array

Calculate the average value of the elements in the array

2 years ago

Solved

the average value of the elements

Calculate the average value of the elements in the array

2 years ago