# Robert Brown

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Rescale Scores

Each column (except last) of matrix |X| contains students' scores in a course assignment or a test. The last column has a weight...

9 months ago

Question

how can I gracefully exit a while loop, when reading from a data file of variable length, and the file may terminate abruptly and incompletely when written

here is some sample code with comments on what is happening... (actual code reads huge file with huge messages... shortened her...

9 months ago | 2 answers | 0

### 2

answershow to create matrix?

you can specify the elements of a 3x3 matrix as follows: >> a = [1 2 3; 4 5 6; 7 8 9] the result will be a = 1 2 ...

10 months ago | 0

How do I plot a point on a graph?

Add these lines to the bottom of your code, to plot the desired value as a red asterisk on the existing plot with the other data...

10 months ago | 0

How can I determine the y-intercept from known x and y values?

define a vector, x x = 1:10 define a slope, m define an intercept, b NOTE: I did this for the example, to generate the da...

10 months ago | 0

| accepted

DCT transformation

Couldn't find your image, so I found 'rice.png' within MATLAB I = im2double(imread('rice.png')); Display the rice.png image,...

10 months ago | 0

How to make lines plotted as dots for discontinuous data more visible in legend?

Following Chris LaPierre's advice above... plot the graphs as a group with lines at only the first point, then plot the the gra...

10 months ago | 1

| accepted

Why is my code a matrix and not a double

1 e = [0.01; 2 0.1; 3 0.5; 4 0.9]; 5while j <= 4 6 while i <= 7 7 if M(i,j) > -pi && M(i,j) < 0 || M...

10 months ago | 0

Solved

Calculate BMI

Given a matrix |hw| (height and weight) with two columns, calculate BMI using these formulas: * 1 kilogram = 2.2 pounds * 1 ...

10 months ago

Solved

Verify Law of Large Numbers

If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

10 months ago

Solved

Find the Oldest Person in a Room

Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

10 months ago

Solved

Convert from Fahrenheit to Celsius

Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...

10 months ago

Solved

Calculate Amount of Cake Frosting

Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

10 months 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]; ...

10 months ago

Solved

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...

10 months ago

Solved

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...

10 months ago

Solved

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...

10 months ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

10 months 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...

10 months ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

10 months ago

Quantization of a standard Cosine signal

%% Description of Z1 First, we recognize that loop is equal to sample number. So L_level(loop) is the quantization level of th...

10 months ago | 0

Derivation of sin(x) gives false cos(x)

Technically, the gradient is extrapolating data!!! When you have a series of position measurements..... you require 2 positio...

10 months ago | 0

regarding music note code can anyone explain this code line by line?

First trick with understanding this code is that you need the *.wav file. WAV is an audio recording format. Without that, the...

10 months ago | 0