x = -10 : 0.01 : 10;y = (exp(x)/ sin(x)) + 0.3;plot(x,y)
MATLAB: Hi, how can i proceed with this question, everytime i plot it, it doesn’t show me the line. Can u guys help me
exponential graphMATLABplotting
Related Solutions
x = linspace(0,1 ,51)';y = linspace(0,1,51)';[X,Y] = meshgrid(x, y);Z = exp(-2*pi^2*Y).*sin(2*pi*X); % I only changed this line!
surf(X, Y, Z);ylabel('t');xlabel('x');zlabel('u(x,t)')
Lets have a look, so you can understand why that line. You wrote this:
Z=exp(-4.*(pi^2)*0.5*Y)*sin(2*pi*X); ^ element-wise multiply, but pointless.But what is the point of element-wise multiplication with 4? 4 is a scalar number and so is pi, it serves no purpose whatsoever to use element-wise multiplication with them. So what parts of that calculation are not scalar? Answer: X and Y. Therefore any operation involving X and Y, or any other arrays derived from them will need to use element-wise operations. In this case this means the exp(..) and sin(..) terms will need to be multiplied using element-wise multiply. And thus I showed you (twice so far) this, which uses element-wise multiply for the terms that are arrays (and I did not use it on the scalar values like you did):
exp(-2*pi^2*Y).*sin(2*pi*X) ^ element-wise multiply, required.or if you really want to have that 4 and 0.5:
exp(-4*pi^2*0.5*Y).*sin(2*pi*X)You have now been told this multiple times:
"Does anyone see anything that is prevent the regular plot from being plotted?"
Here are two bugs on the first two lines:
x=0:100:10; % start:step:end -> how many points are there between 0 and 10 with step of 100?
y=10*exp(-0.5*x)*cos(6*x); % you used MTIMES but you should use TIMES.
To use MATLAB you need to know the difference between array and matrix operations:
Best Answer