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宇豪 李


Last seen: nästan 2 år ago |  Active since 2022

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

nästan 2 år ago

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Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

nästan 2 år ago

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Is this matrix orthogonal?
Given a square matrix, a, determine whether it is orthogonal. INPUT: a, a n x n matrix OUTPUT: true or false

nästan 2 år ago

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Make a Plot with Functions
Make a plot and test

nästan 2 år ago

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Add two numbers
Calculate the sum of two numbers. Example input = [2 3] output = 5

nästan 2 år ago

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

nästan 2 år ago

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Approximate e
Given a and n, compute and approximation to f = a * e ^ n, without the use of exp, string operations, or floating point numbers....

nästan 2 år ago

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Find a real root of a quintic function

nästan 2 år ago

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Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

nästan 2 år ago

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Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

nästan 2 år ago

Solved


Return area of square
Side of square=input=a Area=output=b

nästan 2 år ago

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

nästan 2 år ago

Solved


What's size of TV?
Many people buy TV. Usually they ask about diagonal. But also important are width and height. Let's assume that all TV have rati...

nästan 2 år ago

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

nästan 2 år ago

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Right and wrong
Given a vector of lengths [a b c], determines whether a triangle with those sides lengths is a right triangle: <http://en.wikipe...

nästan 2 år ago

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Is My Wife Wrong?
Answer the question. (see also <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right Problem 149: Is my ...

nästan 2 år ago

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Find out total non zero element of matrix
Find out Non zero element of matrix A=magic(5) 17 24 1 8 15 23 5 7 14 16 4 6...

nästan 2 år ago

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find the surface area of a cube
given cube side length x, find the surface area of the cube, set it equal to y

nästan 2 år ago

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only input
Return the output without writing any code into the function.

nästan 2 år ago

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Generate pi using logarithm
Generate pi using logarithm

nästan 2 år ago

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multiply by three
Given the variable x as your input, multiply it by 3 and put the result equal to y. Examples: Input x = 2 Output y is ...

nästan 2 år ago

Solved


Is it a number?
Determine if input is numeric. If it is,output is 1; if it is not, output is 0.

nästan 2 år ago

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Area of a Square
Inside a square is a circle with radius r. What is the area of the square?

nästan 2 år ago

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

nästan 2 år ago

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Plot Damped Sinusoid
Given two vectors |t| and |y|, make a plot containing a blue ( |b| ) dashed ( |--| ) line of |y| versus |t|. Mark the minimum...

nästan 2 år ago

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Solve a System of Linear Equations
Example: If a system of linear equations in x₁ and x₂ is: 2x₁ + x₂ = 2 x₁ - 4 x₂ = 3 Then the coefficient matrix (A) is: 2 ...

nästan 2 år ago

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Linear system of equations
Solve the system of equations in three variables.

nästan 2 år ago

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Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

nästan 2 år ago

Solved


Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; ...

nästan 2 år ago

Solved


Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

nästan 2 år ago

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