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Last seen: etwa ein Monat vor Aktiv seit 2017

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MATLAB enthusiast , Mechanical engineer (MeMe) :-)

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Gelöst


Acidity of vinegar and salts
Assuming: pH (potentia hydrogenii) = - log10(H+ ionic concentration in mol/Liter). For a buffer solution containing acetic acid ...

etwa ein Monat vor

Gelöst


Volume of this donut
Given hole diameter a, and outermost diameter b, determine the volume y of the resulting donut.

etwa ein Monat vor

Gelöst


Size of this cup?
The given vector has diameter of the cup in mm sampled at micrometer increments in depth from top to bottom, need output in cc a...

etwa ein Monat vor

Gelöst


Finding perimeter of a rectangle
A rectangle has a length of x centimeters and a width of w centimeters. Find the perimeter.

etwa ein Monat vor

Gelöst


area of an annulus
Given the diameter d of the inner circle of the annulus. Given length z of a chord of the outer circle of the annulus. This chor...

etwa ein Monat vor

Gelöst


expand intervals vol.2
Similar to problem <http://www.mathworks.co.uk/matlabcentral/cody/problems/2528 2528>. This is a more general case, when bounds ...

etwa ein Monat vor

Gelöst


Time Expansion
How can you slow down any discrete-time signal? Example Input original signal x. x = [1 2 3 -1 -2 -5 -4] We want t...

etwa ein Monat vor

Beantwortet
Incorrect dimensions for matrix multiplication
k = @(t,u) (k0 + (p*k0.^u-q*k0).*t +(p*k0.^u-q*k0).*(p*u*k0.^u-q).*t.^2/factorial(2)... +(p*k0.^u-q*k0).*((p*u.*k0.^u-q)....

etwa ein Monat vor | 0

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Beantwortet
how to get variable of function in for loop
x = 1:20; y = 1:13; f = []; for i = 1:length(x), for j = 1:length(y); f(i,j) = x(i).^2 - x(i) -2*y(j).^2 + y(j) -2...

etwa ein Monat vor | 0

Gelöst


Convert Kilometers to Miles
Convert kilometers to miles. Consider 1 km = 0.62 mile. Note: Don't use the '*' operator.

etwa 2 Monate vor

Gelöst


Create an anti-identity matrix
Create an anti-identity matrix of given dimension. Examples n = 2 A = [0 1; 1 0] n = 3 A = [0 0 1; 0 1 0; 1 0 0...

etwa 2 Monate vor

Gelöst


Sort the vector with the given index
Given x = [1 2 4 8 17] and t = [1 3 2 5 4] then y = [1 4 2 17 8].

etwa 2 Monate vor

Gelöst


middleAsColumn: Return all but first and last element as a column vector
Given input A, return all but the first and last elements, arranged as a column vector. (I.e., all dimensions after the first s...

etwa 2 Monate vor

Gelöst


What number has this problem?
This problem is added because it is problem number *???* in the "Community" problems section. <http://www.mathworks.de/matlab...

etwa 2 Monate vor

Gelöst


Back to basics 9 - Indexed References
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix and row and column, output the index of th...

etwa 2 Monate vor

Gelöst


Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

etwa 2 Monate vor

Gelöst


Switch matrix to a column vector
for e.g. x = [1 2 3 4] y = 1 3 2 4

etwa 2 Monate vor

Gelöst


Generate a NaN...on purpose
The goal is to create a function that will return a single "NaN" without using the nan function. I am interested to see how many...

etwa 2 Monate vor

Gelöst


Convert yards to feet
The goal of this script is to convert a value given in yards to feet.

etwa 2 Monate vor

Gelöst


Find the sum of n squares
What is the sum of the squares of the first n integers?

etwa 2 Monate vor

Gelöst


Remove the positive integers.
Given array x (of integers), remove all the positive numbers and display ouput as y. Example x=[1 -2 3 -4] , output is y=[-2 -...

etwa 2 Monate vor

Gelöst


Getting the absolute index from a matrix
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to get the <http://www.ma...

etwa 2 Monate vor

Gelöst


If-then-else
Complete the function below such that if the value of x is in the range 10 to 14, inclusive, the value 18 is assigned to y. Oth...

etwa 2 Monate vor

Gelöst


Back to basics 26 - Keywords
Covering some basic topics I haven't seen elsewhere on Cody. Return a cell array of strings of all MATLAB keywords.

etwa 2 Monate vor

Gelöst


surface of a spherical planet
you just discovered its circumference, that is the input.

etwa 2 Monate vor

Gelöst


Colon operator of two vectors
You are given two vectors of equal length: VecStart, VecEnd Each vector contain a set of integers, where VecEnd(j)>=VecStar...

etwa 2 Monate vor

Gelöst


Find Out sum of principal diagonal element of given matrix
Find out sum of principal diagonal element of given matrix If A=[1 0 0; 0 1 0;0 0 1], then answer must be 3.

etwa 2 Monate vor

Gelöst


Mode
Find the mode of the vector Assumption: no vector is bimodal Example 1: input=[1 2 3 4 4]; output=4 Example 2: input=[7...

etwa 2 Monate vor

Gelöst


Back to basics 19 - character types
Covering some basic topics I haven't seen elsewhere on Cody. Return the number of punctuation characters in the input variabl...

etwa 2 Monate vor

Gelöst


Weighted average
Given two lists of numbers, determine the weighted average as follows Example [1 2 3] and [10 15 20] should result in 33.3...

etwa 2 Monate vor

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