I am not getting the title, x axis, y axis label in the graph eventhough In code i given title('Demonstration of Rolles theorem'); xlabel('x-axis') ylabel("y-axis")

[Prachi Kulkarni]

Hi,

I implemented your code, in MATLAB R2021b, on a sample symbolic expression.

It shows the legend, title, xlabel, ylabel for the figure.

Here’s the example code.

syms x
f = x^2;
r=0;
a=-2;
b=2;

tval=subs(f,x,r);
xval=linspace(a,b,100);
yval=subs(f,x,xval);
plot(xval,yval);
[p,q]=size(xval);
for i=1:length(tval)
    hold on;
    plot(xval,tval(i)*ones(p,q),'r');
    hold on;
    plot(r(i),tval(i),'ok');
end
hold off;
legend('Function','Tangent');
title('Demonstration of Rolles Theorem');
xlabel('x-axis')
ylabel("y-axis")

And this is the output figure.

If you are still facing the issue, can you please share your full code and which release of MATLAB you are using?