Answered
Error using FDE12
s = 1:4; % define s vector passed as argument to function line below e.g. values sdot = @(t,s)[A-(e*s(1)*s(2))-(a*s(1)*s(3))+...

4 years ago | 0

Answered
An error in my code
clear syms x % syms F= atan(x); t5= taylor(F,x,'order',5); t7= taylor(F,x,'order',7); fplot(x^3/3+x,[-pi pi],'b') hold o...

4 years ago | 2

Answered
I do some revisions to my equation but I still got no answer. It says that there is no enough input argument. Can someone please help me?
x0=[150;150;150;150;150;150;150]; % x = 1:7; % give input vector to fucntion sol=fsolve(@rle,x0) % call the function using fu...

4 years ago | 0

| accepted

Answered
Pcolor Plot returning error Color data input must be a matrix.
h = pcolor(X1, Y1, z); % use X1, Y1 instead of x1 , y1, z must be 21x26 matrix

4 years ago | 0

Answered
how to plot solution of ODE eqution with out using fplot ?
% this code is used to show how to use ode in matlab, via a simple problem % for serios RC circuit with DC supply clc;clear a...

4 years ago | 1

| accepted

Answered
How can I store the whole diagonal and not only the first element (For loop)
% Part 3.1: Diagonal %A rng('default') r2 = randi(100,3,3); % Creating a 3x3 matrix, with random values from 1 to 100 %B ...

4 years ago | 0

| accepted

Answered
Why is ySol(t) = Dsolve(ode,cond) wrong? What should it be instead?
y=eval(ySol(t))% Use ySol(t) to evaluate

4 years ago | 0

Answered
Having trouble writing a multiple gravitational physics simulation code, as every planet effects one another.
a(q,:)=(sum(F(q:(q+o-1),:)))./mass(q); %Calculate acceleration of each planet v(q,:)=v(q,:)+a(q,:)*ts; %calula...

4 years ago | 0

Answered
Trouble graphing this non-linear function
x = 1:100; y = ((factorial(x)).^(1./x))./x; % use element wise division fplot(y,[0 100]) % no space between function and par...

4 years ago | 0

Answered
I am trying to a series generated from complex function but it gives to me an error.
clear; clc; syms k Delta=0; chi=0; theta=0; alpha=5; phi=0; bn=exp(-0.5*alpha^2)*(alpha^k)/sqrt(gamma(k+1)); bn1=exp(-0...

4 years ago | 0

Answered
using for loops to calculate compound interest with yearly contributions
N=17804; P=1000; C=1000; r=(10/100); I = 1; while P<=N y(I)=(P*(1+r)); % use an index for desired amount, P=y(I)...

4 years ago | 0

Answered
Semilogx function giving a linear scale
S = [1e-2 1e-1 1 10 100 1000 1e4]; % Remdesivir concentration, in uM Km = 0.5; % Equilibrium constant, in uM Vmax = 0.82; % ma...

4 years ago | 0

| accepted

Answered
Need help with syntax and how to use sigma in matlab
clear close all Z1=500 Z2=50 Z3=500 u=1 tau1=(2*Z2)/(Z1+Z2) tau2=(2*Z1)/(Z1+Z2) tau3=(2*Z3)/(Z3+Z2) p1=(Z2-Z1)/(Z2+Z1...

4 years ago | 1

| accepted

Answered
Unable to perform assignment because the size of the left side is 1-by-2 and the size of the right side is 2-by-2. (Line 32)
pp=@(t,x)[.23*x(1)-.0133*x(1)*x(2); -.4*x(2)+.0004*x(1)*x(2)] [t,y]=rk4sys(pp,[0,65],[550,20],0.3) figure(1) plot(t,y(:,1),...

4 years ago | 1

Answered
How to skip a data set in the legend of a plot?
clear; clc; clf; close all; x1 = [0.015 0.020 0.050 0.100 0.200 0.300 0.400 0.500]; y1 = [5.518E-11 7.215E-11 1.832E-10 ...

4 years ago | 1

| accepted

Answered
how to put for loop value into a vector
k = 0.168:0.168:1.68 ; for x=1:length(k) if k(x)>=0.03 && k(x)<=0.06 h(x)=1.437*k(x)^(-0.279); elseif k(x)>=0.07 && k(x)<=0...

4 years ago | 0

Answered
fplot invalid parameter error
m=100; k1=1500; k2=2500; k3=700; wb=4.4; Y=0.05; w1=sqrt(k1/m); w2=sqrt(k2/m); w3=sqrt(k3/m); r1=wb/w1; r2=wb/w2; r...

4 years ago | 1

Answered
Error with the command Geoplot
lat=cell2mat(A.Latitud);% if Latitud is the header name of column. Please check this. There Was extra parenthesis in my pr...

4 years ago | 0

Answered
Multiplying f(x) with f(-x)
cof = [1 15 7 2] syms x F(x) F = (cof(1)*x.^3+cof(2)*x.^2+cof(3)*x+cof(4)) FF = subs(F,x,-x) Fx = F.*FF % resulting produc...

4 years ago | 0

| accepted

Answered
Discontinuous display in Simulink Scope
Select the plot type as Auto in scope block. This plots the graph as continuous signals instead of discrete ones which you have...

4 years ago | 0

Answered
Why is my if counter not working
s= 0 x = linspace(-1,1, 50) n = linspace(1,10,50) L = 2 total = 0 s= zeros(size(n)) for i = 1:length(n) s(i) = (8/(p...

4 years ago | 0

Answered
I need to plot a graph of P, Rdia and Vo, please help me how to get graph. (for every 10 increment of pressure, there is 1 ohm increment of Rdia , and display the output vo)
Rdia = 3673; % dia resistance value in ohm ; Rtemp = 3618; % Temperature resistance value in ohm; R1 = 3600; % fixed resistanc...

4 years ago | 1

| accepted

Answered
Legend wont display lines properly in figure window
lgd = legend('Bundle','30% Opening','50% Opening', ... '65% Opening','85% Opening','100% Opening'); Use without a { } ...

4 years ago | 0

Answered
gamma function error in calculation
syms x a Y=sym(zeros(1)); Y(1)=0; a=1/2 for i=1:4 if i==5 A=1; B = 0; Y(i+1)=simplify((gamm...

4 years ago | 0

Answered
Function works with one input but not the other
F(2,:) = Thrust ./ MFR ; F(1,:) = (y .* A_choke) ./ MFR; Check the size of output matrix

4 years ago | 0

Answered
Index exceeds array dimensions. Index value 150002 exceeds valid range [1-150001] for array 'v'.
for n = 1:length(t)-1; Error shows clearly that vector _v_ has 1 additional element. Change the loop as above since v(n+1) ...

4 years ago | 0

| accepted

Answered
I want to contour plot the data as shown in attached figure from my equation. I am not able to get the gaussian type behavior. What's wrong with my code?
h_t=linspace(100,500,100); r=linspace(-100,100,500); [H,R]=meshgrid(h_t,r); Rho_m=Ib.*(Rho./(H)).^2.*exp(-(2*R.^2./(H))); %...

4 years ago | 0

| accepted

Answered
Zeros error when entering matrix data
roomLength=zeros(1,(numberRooms(i))); roomWidth=zeros(1,(numberRooms(i))); Give the size of _numberRooms_

4 years ago | 0

| accepted

Answered
find the coefficients a, b, and c of the quadratic polynomial. that passes through the three points (x, y)
syms a b c x = [1 4 5]; y = [4 73 120]; eqn = y == a*x.^2+b*x+c sol = solve(eqn,[a b c])

4 years ago | 0

Answered
i have 300 sheets in one worksheet in excel. i wan to import this to matlab. I want to create loop where it reads all sheets and plot graph on a same graph.
hold all for I = 1:length(num) A(:,I) = xlsread('C:\Users\varun\OneDrive\Desktop\New folder\asd.xlsx',num2str(I),'A7:A26'); ...

4 years ago | 0

| accepted