# Eventhough i used syntax for plotting xlabel, ylabel , title but its not visible in the graph

5 views (last 30 days)
NITISH B on 9 Oct 2021
Commented: NITISH B on 10 Oct 2021
clear
clc
syms x y
f(x)=input('Enter the function:');
I=input('Enter the interval:');
a=I(1);b=(2);
Df=diff(f,x);
m=(f(b)-f(a))/(b-a);
c=solve(Df==m, x);
c=c(a<c&c<b);
disp('Values of c lying in the interval I are');
disp(double(c));
T=f(c)+m*(x-c);
disp('The tangent Lines at c are');
disp(vpa(y==T,4));
figure
fplot(f,I); grid on; hold on;
fplot(T, I, 'r');
plot(c,double(f(c)), 'ko');
plot(I,double(f(I)), 'm');
xlabel('x'); ylabel('y');
title('Demonstration of Mean value theorem');
NITISH B on 10 Oct 2021
x label ylabel title also i am not getting in the graph...Whats the problem?

Walter Roberson on 10 Oct 2021
Works for me.
syms x y
f(x)= x+exp(3*x) %input('Enter the function:');
f(x) =
I= [0,1] %input('Enter the interval:');
I = 1×2
0 1
a=I(1);b=(2);
Df=diff(f,x);
m=(f(b)-f(a))/(b-a);
c=solve(Df==m, x);
c=c(a<c&c<b);
disp('Values of c lying in the interval I are');
Values of c lying in the interval I are
disp(double(c));
1.4019
T=f(c)+m*(x-c);
disp('The tangent Lines at c are');
The tangent Lines at c are
disp(vpa(y==T,4));
figure
fplot(f,I); grid on; hold on;
fplot(T, I, 'r');
plot(c,double(f(c)), 'ko');
plot(I,double(f(I)), 'm');
xlabel('x'); ylabel('y');
title('Demonstration of Mean value theorem');
##### 1 CommentShowHide None
NITISH B on 10 Oct 2021
But i am not getting this😞.. What's the problem I don't know

### More Answers (2)

Cris LaPierre on 9 Oct 2021
It works fine for me
clear
clc
syms x y
f(x)=x.^2; % modified so code runs here
I=[0 10]; % modified so code runs here
a=I(1);b=(2);
Df=diff(f,x);
m=(f(b)-f(a))/(b-a);
c=solve(Df==m, x);
c=c(a<c&c<b);
disp('Values of c lying in the interval I are');
Values of c lying in the interval I are
disp(double(c));
1
T=f(c)+m*(x-c);
disp('The tangent Lines at c are');
The tangent Lines at c are
disp(vpa(y==T,4));
figure
fplot(f,I); grid on; hold on;
fplot(T, I, 'r');
plot(c,double(f(c)), 'ko');
plot(I,double(f(I)), 'm');
xlabel('x'); ylabel('y');
title('Demonstration of Mean value theorem');
NITISH B on 10 Oct 2021
built-in (/MATLAB/toolbox/matlab/graph2d/plot)
/MATLAB Drive/hold.m
like this for me showing in command window..by using which plot which hold

Walter Roberson on 10 Oct 2021
You have your own hold.m that is interfering with the Mathworks command. You need to rename it or delete it or put it in a directory named "private" in the code that needs it.
NITISH B on 10 Oct 2021
wow!!...Its working now ...Thanks a lot!! Sir..