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Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

8 years ago

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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...

8 years 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 other numbers. Otherwise return false. E...

8 years ago

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

8 years ago

Solved


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

8 years ago

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Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

8 years ago

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

8 years ago

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

8 years ago

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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

8 years ago

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

8 years ago

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Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

8 years ago

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

8 years ago

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Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

8 years ago

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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...

8 years ago

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

8 years ago

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

8 years ago

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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]; and ...

8 years ago

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

8 years ago

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

8 years ago

Solved


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

8 years ago

Solved


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...

8 years ago

Answered
Get residuals from real data and estimated arima model
Hi Vardan, You can use the 'resid' function to get residuals from the data and the model.Refer the following documentation fo...

8 years ago | 0

Answered
What does ">IC" symbol mean that appears on a Simulink signal line ?
Hi Scott, The symbol 'IC' means that outport is getting its initial conditions from the block connected to it when the 'Sourc...

8 years ago | 4

| accepted

Answered
Adding a second plot and y-axis to existing code.
Hi Aaron, If you want to plot another varaible on the same plot with same scale(of y-axes), you could use the plot command. O...

9 years ago | 0

Answered
How can I include a time delay in Simulink of the type exp(-Ts) ?
Hi Francois, Instead of using Continuous 'Transfer fcn' block, use the 'LTI System' block present in Control System toolbox t...

9 years ago | 0

| accepted

Answered
How to update the parameters in a mask?
Hi Willy, A possible reason for this is that you might be creating the mask parameters(for example, the parameter 'bg') for y...

9 years ago | 0

Answered
haw i do LTI system with gui
Hi Noura, This can be done using the Linear System Analyzer. Refer the examples in following documentation that will help you...

9 years ago | 0

Solved


Connect blocks in a model
Connect the blocks in the model to produce the following signal: <<http://blogs.mathworks.com/images/seth/cody/connect-blocks...

9 years ago