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Sum all integers from 1 to 2^x
Given a number x, your function must return the summation of all integers from 1 to 2^x.

3 years ago

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Average of odd values
Find the average of odd values in given a matrix. e.g x=[ 4 11 8 ; 9 2 7 ] y =( 11 + 9+ 7 ) / 3

3 years ago

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Add the positive numbers
Add only the positive numbers of x example: x = [-2 -1 0 1 2 3] the positive numbers are: 1 2 3, so their sum is 6

3 years ago

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Set x value to each odd index of vector y.
Set x value to each odd index of vector y.

3 years ago

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Select primes from the matrix.
Select primes from the matrix.

3 years ago

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Add the even numbers
Add only the even numbers of x example: x = [1 2 3 4 5] the positive numbers are: 2 4, so their sum is 6

3 years ago

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create a circulant matrix
create a circulant matrix

3 years ago

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Find the volume of cone
Find the volume of cone, when given radius(r) and height(h).

3 years ago

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angle in regular polygon
Make a function which returns measure of interior angle in x-side regular polygon. x is as input. Please pay attention, that 1 ...

3 years ago

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Display positive elements of matrix.
Display positive elements of matrix.

3 years ago

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Pointwise multiplication of vectors.
Pointwise multiplication of vectors x and y. Example x= [1 3 5 7 9 11 13 15 17 19] y=[ 1 4...

3 years ago

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Delete x value in given vector y.
Delete x value in given vector y. Exapmle x=5; y=[ 1 2 5 6 74 5 2 5] result=[1 2 6 74 2]

3 years ago

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cross in array
Make a cross from "1" in odd size array. Other value from array should be equal to "0"; As input you get length of side of arra...

3 years ago

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Find sum of negative elements in row.
Find sum of negative elements in row. Example x=[1 -5 3 4 -6 6 7 8 9 10] result = -11

3 years ago

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Are you in or are you out?
Given vertices specified by the vectors xv and yv, and a single point specified by the numbers X and Y, return "true" if the poi...

3 years ago

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Stress-Strain Properties - 5
Similar to the previous problem, materials may be characterized by their stiffness-to-weight ratio, which is the elastic modulus...

3 years ago

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Numbers in extended form
Shhhhhhh. Don't tell my daddy, but I'm borrowing his Cody account so all of you very smart people can help me out. I just star...

3 years ago

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Stress-Strain Properties - 4
A common measure of the ability of a material to carry load per unit mass is termed strength-to-weight ratio and is calculated b...

3 years ago

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Stress-Strain Properties - 3
A brittle material will not exhibit a yield point. In other words, the yield point and failure point coincide. In such cases, th...

3 years ago

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Stress-Strain Properties - 2
The resilience of a material is its ability to resist permanent (or plastic) deformation. The resilience coincides with the elas...

3 years ago

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Stress-Strain Properties - 1
This is the first in a series of problems regarding mechanics of materials, in particular, material properties drawn from stress...

3 years ago

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Rule of mixtures (composites) - lower and upper bounds
The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

3 years ago

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Generate the Matrix!
Given n, generate the following matrix: a = [ n n-1 n-2 ... 2 1; n-1 n-1 n-2 ... 2 1; n-2 n-2 n-2 ... 2 1;...

3 years ago

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Back to basics 25 - Valid variable names
Covering some basic topics I haven't seen elsewhere on Cody. Given a string, return true if it is a valid MATLAB variable nam...

3 years ago

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Parallel vectors
Return true or false depending on whether 2 vectors are parallel or not. Vectors can be 2 or 3 dimensional. The origin is not c...

3 years ago

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Tridiagonal
Return an n-by-n matrix that has a, b, c as the subdiagonal, main diagonal, and superdiagonal entries in the matrix. Example ...

3 years ago

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The prisoner
"We want information, information, information." "Who are you?" Input can be a string or a number (array).

3 years ago

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Implement full adder circuit
Implement full adder circuit (Full Adder) Inputs signals are a, b and cin. Output signal y = [cout sum]

3 years ago

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Convert a vector of Integers into a matrix of binaries
Convert a vector of positive integers into a matrix containing their binary representation. Each column of the output contains t...

3 years ago

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Minimal cost
A power house, P, is on one bank of a straight river W meters wide, and a factory, F, is on the opposite bank L meters downstr...

3 years ago