Answered
returning differences between two matrices
Index = find(A~=B)

8 years ago | 0

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Answered
Write a MALTAB script ﬁle for plotting the below surfaces by coloring the surface with a coluor map , appropriately naming the axis and titling the plot. z = sin(x^2 + y^2)*(x + y)−2*x/y for (x,y) ∈ [−3,3]×[−3,3]
syms x y h=ezsurf(sin(x^2 + y^2)*(x + y)-2*x/y ) xlim([-3 3]) ylim([-3 3]) Edited after stephen's an...

8 years ago | 0

Answered
WriteaMALTABscriptﬁleforplottingthebelowsurfacesbycoloringthesurfacewithacolormap, appropriately naming the axis and titling the plot. 1. z = sin(x+y)/ x^2+y^2 for (x,y) ∈ [−2,2]×[1,3]
syms x y h=ezsurf(sin(x+y)/(x^2+y^2)) xlim([-2 2]) ylim([1 3])

8 years ago | 0

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Answered
Matrix Multiplication, row by row multiplication and column by column multiplication
*There is no in-built function but you can do this:* A = [ 1 2 3; 4 5 6; 7 8 9] B = [ 2 2 2; 2 2 2 ; 2 2 2] ...

8 years ago | 2

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Answered
Error: Index out of bounds
[num,txt,raw]=xlsread('11517_2004.xlsx') month=num(:,2) day=num(:,3) seconds=num(:,6) wind_speed=num(:,8) w...

8 years ago | 0

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Answered
How do I plot a contour map in Matlab?
*EDITED* x=linspace(-6,6,1000); y=x; [X,Y]=meshgrid(x,y) phi=X.*Y-Y contour(X,Y,phi)

8 years ago | 1

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Answered
system of equations (solve exponentiel equations
@Marwen you get error/s because the number of elements m,n and R,r are not the same in order to make the loop perform calculatio...

8 years ago | 1

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Answered
How linear system of equations can be solved in matlab
*Try this @Wajahat:* syms l p q syms f1(x) f2(x) %edited after sir Walters comment S1 = diff(f1) == l...

8 years ago | 0

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Answered
Solution of this Non linear Equation
syms x k=2; eqn=0.3==0.5*(x-0.022*k^2-5.6)*exp(-0.17*x); x=vpasolve(eqn)

8 years ago | 0

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Answered
Trying to produce a 4x40 table with the values of M, T, p, A.
*Try this:* % Constants gamma = 1.27; x = (gamma - 1)/(gamma + 1); % Initial Guesses T = 1; ...

8 years ago | 1

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Answered
Solve linear system by trial and error
*Try this:* syms x a b assume(x>b) eqn=x==a+b sol=solve(eqn,x,'ReturnCondition...

8 years ago | 0

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Answered
Reason for line not plotting?
Use *element wise operation* because as you defined *x* as a *vector* you should use dot it means each element is calculated one...

8 years ago | 0

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Answered
Why the given code is not running
It’s working for me . Make sure you have *partial differential equations toolbox* by typing ver in your command window.

8 years ago | 0

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Answered
Publish only graphs not the other output.
t=1:256; just suppress the output by putting *semicolon*(;)

8 years ago | 1

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Answered
Write MatLab code to translate the line: x(t)=-t y(t)=-t z(t)=0 0≤t≤1 to any new location in the x,y-plane. Plot together the original line and the new line for a translation of your choice.
syms x(t) y(t) z(t) x(t)=-t y(t)=-t z(t)=0 ezplot(x,y,[0 1]) %2d hold on ezplot3(x,y,z,[0 1]) %3d

8 years ago | 0

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Answered
How to calculate the coefficients of non-polynomial terms
syms x a=-9*cos(x)*4+x*9+4*sin(x) [C,T] = coeffs(a) %edited after John’s comment. It’s working for me

8 years ago | 2

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Answered
How to Publish matlab outout and code in pdf.
*Try this :* publish('myfile.m','pdf') *Remark: The default file format is .html* *Read the link below for better und...

8 years ago | 8

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Answered
Simple Question (I think) about finding zeros(and other number) in an array
*TRY THIS:* R = [ 1 2 0 1 0 2] R(R==0)=3 P = [ 1 2 3 4 5] Q = [ 5 4 3 2 5] Q(Q==P)=6

8 years ago | 2

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Answered
Whats wrong with this command?
*Use function handle correctly:* y = @(m) sqrt(9.81*m/0.25)*tanh(sqrt(9.81*0.25/m)*4)-36;

8 years ago | 0

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Answered
I am new to MATLAB and i have this question regarding execel
Try this: [num,txt,raw]=xlsread('exp2.xlsx') DESIRED_FUEL = num(:,3) for i = 1:numel(DESIRED_FUEL) if ...

8 years ago | 0

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Answered
how to tell if two elements in an array are identical
Use: isequal(A,B) %to check they are the same. Or A=1:5 B=[1 4 5 2 8] % to find where they are identical ...

8 years ago | 0

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Answered
how can i calculate the derivative of an x vector?
Try the below: syms f(x) f = 2*x.^4 - 5*x.^3 -12*x.^2 + 30*x +10 first_derivative = diff(f) second_d...

8 years ago | 0

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Answered
How to rewrite sin(x)/x as sinc(x)?
*Try :* syms x disp('A =') disp('sinc(x)') A=sinc(x); *Note: MATLAB just recognises the sinc(x) function as sin...

8 years ago | 1

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Solved

Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

8 years ago

Answered
Symbolic Matrix has extra blank row
*OR TRY:* C = str2sym('[1 b; b 2]') *Edited after Sir walter‘s comment.*

8 years ago | 0

Answered
Incorrect dimensions for raising a matrix to a power. Check that the matrix is square and the power is a scalar. To perform elementwise matrix powers, use '.^'.
*No need for loop* alpha = 0.8; G = 2000; emissivity = 0.5; BoltzmannC =(5.67.^-8); T = 0; %valuesofT =...

8 years ago | 0

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Answered
How to convert a matrix like this?
Try this: A(A==0)=[]

8 years ago | 0

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Answered
r=e^(cos*theta)-2*cos(4*theta) graphic on MATLAB
I got the graph and it is the same in Wolfram alpha there is nothing wrong with it. %EDITED after the remark by JOHN D'ERRI...

8 years ago | 0

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Answered
How do I determine how many numbers are displayed as a result of this for-loop?
counter=0; for i=1:30 for j=1:30 for k=1:30 if(i*j*k ~= 900) ...

8 years ago | 1

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Answered
Issues Plotting Equation for a Range of Variable
*Use plot command because all the variables have values:* % Variables & Given clear; clc; ARone = 1; ARtwo = 5 ;...

8 years ago | 0

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