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# Natalya Kavetska

21 2016 年以降の合計貢献数

#### Natalya Kavetska's バッジ

What do you get if you multiply six by nine?
The Hitchhiker's Guide to the Galaxy based task. Tip: n-base numeral system

Graph is undirected. (s,t) in node pairs. Please, return full storage version of the matrix.(use _full(A)_ ) Input: s...

Find the Sum of the Series:
<<https://psv4.vk.me/c810428/u48725350/docs/03e9821af0aa/for.jpg?extra=iyw_6UQfL0GhDJ2NtppzhQFjAvaCe79tBk0IIpSRcn5jRJvUgdAe4u7KP...

Find the sum of the negative elements under the main diagonal.
Example Input A=[1 2; -3 0] Output -3

Solve the system of equations.
_Ax=b_ * _A_ - square coefficient matrix * _b_ - right side column vector Find vecor _x_.

Numerate input arguments
For every input, output the number. Example: [a, b] = Test('first', 'second') a=1; b=2;

Find area.
Suppose <<https://www.mathworks.com/help/examples/matlab/ImproperIntegralExample_eq17103907294130514984.png>> b=Inf. Fi...

Calculate the eigenvalues of A.
Calculate the sum of the eigenvalues of A. If it's odd return cubed else return 54.

Find the product of the positive elements above the main diagonal.
Example Input A=[1 2; -3 0] Output 2

Return amount of palindromes in the string.
Example Input: s='eye story pop dictionary noon enjoy software moon' Output: amount=3

Calculate the centroid of a triangle
Info: https://en.wikipedia.org/wiki/Centroid Example Input: x = [0 0 1]; % x-coordinate y = [0 1 0]; % y-coordinat...

Find matrix of indices for multidimensional matrix.
Given some multidimensional matrix A. Get a matrix of the same size as A where all elements are replaced by their index along th...

Create cotangent function out of sine.
Please, don't use cos, tan, cot matlab functions.

Return the length of the longest word in the string.
Example: Input s='A fractal is a natural phenomenon or a mathematical set that exhibits a repeating pattern that display...

Check if a string starts with another string
Input s='He was so tired' q='He' Output ans = true

Return ! if array element starts with a certain letter. Otherwise return ?
Input x=['try' 'once' 'more']; s='t' Output ans='!' Input x=['try' 'once' 'more']; s='O' Output ...

Solve the following boundary value problem
Return the sum of sum(res.y) y"+|y|=0 y(0)=a y(4)=b Tip: use bvp4c

Is my wife right?
Regardless of input, output the string 'yes'.

Given a and b, return the sum a+b in c.

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

How to get second derivative in symblolic toolbox?
my expretion = cos(x*t^2)+x^2+4*t^3); how to get second derivative by t?