Answered

Converting Euler's method calculation into matlab

tray this: % Initial conditions and setup Q=400; A=1200; alph=160; h = 0.5; % step size t = 0:0.5:10; % the range of t ...

Converting Euler's method calculation into matlab

tray this: % Initial conditions and setup Q=400; A=1200; alph=160; h = 0.5; % step size t = 0:0.5:10; % the range of t ...

18 hours ago | 1

| accepted

Answered

Lotka-Volterra Predatir Prey Model Code

using this: function [dPdt] = lotkavolterra(t,P) alpha = 1.5; % you have error here: you using alpa beta = 1; gamma = 3; de...

Lotka-Volterra Predatir Prey Model Code

using this: function [dPdt] = lotkavolterra(t,P) alpha = 1.5; % you have error here: you using alpa beta = 1; gamma = 3; de...

18 hours ago | 0

| accepted

Solved

Counting Sequence

Given a vector x, find the "counting sequence" y. A counting sequence is formed by "counting" the entries in a given sequence...

14 days ago

Answered

¿Por qué mi código no corre?

Hola, Creo que tu condicion incial debe ser de solo dos elementos y no de tres. Intenta este programa principal, el cual llamará...

¿Por qué mi código no corre?

Hola, Creo que tu condicion incial debe ser de solo dos elementos y no de tres. Intenta este programa principal, el cual llamará...

22 days ago | 0

Solved

Triangle of numbers

Create a matrix with the integers from 1 to |n| arranged in a triangular shape. Every row |i| of the matrix contains |i| inte...

22 days ago

Answered

How do I plot a function that has been split into multiple time intervals

I don't know if I understand your problem, but I think it is related to the way to program the following code: t=-1:0.1:6; y...

How do I plot a function that has been split into multiple time intervals

I don't know if I understand your problem, but I think it is related to the way to program the following code: t=-1:0.1:6; y...

23 days ago | 0

Solved

Back to basics 2 - Function Path

Covering some basic topics I haven't seen elsewhere on Cody. Given a string that is the name of a MATLAB function, return a s...

23 days ago

Solved

Prime factor digits

Consider the following number system. Calculate the prime factorization for each number n, then represent the prime factors in a...

24 days ago

Answered

How do I display squares of all even integers from zero to some positive integer input by the the user.And the program must continuously request a number from the user untill a valid a positive integer is entered

M=input('enter integer:'); for c=0:M if mod(c,2)==0 c^2 end end

How do I display squares of all even integers from zero to some positive integer input by the the user.And the program must continuously request a number from the user untill a valid a positive integer is entered

M=input('enter integer:'); for c=0:M if mod(c,2)==0 c^2 end end

26 days ago | 0

Answered

hi I am trying to calculate the 4th root of the function f(x)=3x4+7x3−4x2−10x+15 using newtons method and a for - loop

clear clc close all % function f = @(x) 3*x.^4 + 7*x.^3 - 4*x.^2 - 10*x + 1/5; % derivative df = @(x) 12*x.^3 + 21*x.^2...

hi I am trying to calculate the 4th root of the function f(x)=3x4+7x3−4x2−10x+15 using newtons method and a for - loop

clear clc close all % function f = @(x) 3*x.^4 + 7*x.^3 - 4*x.^2 - 10*x + 1/5; % derivative df = @(x) 12*x.^3 + 21*x.^2...

27 days ago | 0

Answered

Making combinations using random number generators

N=input('give me number of random elements:'); a=input('lower limit of the numbers to generate:'); b=input('upper limit of the...

Making combinations using random number generators

N=input('give me number of random elements:'); a=input('lower limit of the numbers to generate:'); b=input('upper limit of the...

28 days ago | 0

| accepted

Answered

How to create a noisy signal for wavelet transform practice?

maybe this code will help you N=1000; x=linspace(0,2*pi,N); y=sin(x); y2=randn(1,N); y3=y+y2*.1; subplot(2,1,1);plot(x,y)...

How to create a noisy signal for wavelet transform practice?

maybe this code will help you N=1000; x=linspace(0,2*pi,N); y=sin(x); y2=randn(1,N); y3=y+y2*.1; subplot(2,1,1);plot(x,y)...

1 month ago | 1

| accepted

Solved

Given a matrix A return a vector of the product of the elements in each column using a loop without using prod.

--------------------- for m: 3 1 3 3 10 1 9 1 9 4 1 4 5 6 5 ...

1 month ago

Solved

Product of Each Column

Given a matrix |mat| with |n| columns, return a row vector |v| of length |n|, where every element in |v| is the product of the |...

1 month ago

Solved

Replace Nonzero Numbers with 1

Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

1 month ago

Answered

Euler's Method

for n = [10, 20, 40, 80, 160] a = 0; b = .5; c = .25; x = linspace(a,b,n);%[a:n+1:b]; f = x.^3; dx = x(...

Euler's Method

for n = [10, 20, 40, 80, 160] a = 0; b = .5; c = .25; x = linspace(a,b,n);%[a:n+1:b]; f = x.^3; dx = x(...

1 month ago | 0

Answered

plotting for cosine wave

I change some lines.... N=45; theta=0:360; % range of values of theta Na1=2*N*cosd(theta); % cosd for cos when you use de...

plotting for cosine wave

I change some lines.... N=45; theta=0:360; % range of values of theta Na1=2*N*cosd(theta); % cosd for cos when you use de...

2 months ago | 0

Answered

Solving a simple integral with input equation from user

syms x str = input('Enter an equation in x: ','s') ; f = function_handle.empty; f = eval(['@(x)', str]); %x = f(); xmin= ...

Solving a simple integral with input equation from user

syms x str = input('Enter an equation in x: ','s') ; f = function_handle.empty; f = eval(['@(x)', str]); %x = f(); xmin= ...

2 months ago | 1

| accepted

Solved

Area of a pentagon

Given the side of a regular pentagon and its apothem return the area of pentagon. Remember the area of pentagon is calculate ...

2 months ago

Solved

Find the area of the square

There are *n²* circles inscribed in the square ABCD. The perimeter of each circle is *aπ* <<http://imgfz.com/i/3wzCeAT.png>> ...

2 months ago

Solved

Times 5

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

2 months ago

Solved

Times 10

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

2 months ago

Solved

Doubling elements in a vector (★★)

(copy of prob. 1024) Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] t...

2 months ago

Solved

Mo money, mo math #2! (★★★)

(adapted from Prob 9 Cody team) You have a matrix for which each row is a person and the columns represent the number of quar...

2 months ago

Solved

Sum of terms in a series 1 (★★★)

Given x and n, compute the following sum: |x|+|x|^(1/2)+|x|^(1/3)+|x|^(1/4)+|x|^(1/5) ... + |x|^(1/n) where ||x|| indica...

2 months ago

Solved

Sum 1 to 100 even number

Write a Matlab program to add all the even numbers from 0 to 100 |

2 months ago

Solved

Times 11

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

2 months ago