trying to integrate and differentiate a graph

so this is the code that plots my graph

clc
clear
syms t
corner=[-2 0 ;-1 1;1 1;3 4;4 2;7 0;8 0];
%plot(corner);

x=[-3 ;-1; 1; 3;  4;8];
y=[0  ,1 , -2, 4,  2,0];

figure
plot(x,y)

however cant seem to find a code that helps me integrate or differentiate the graph and plot the result as well please help

Answer 1

[KSSV]

clear
corner=[-2 0 ;-1 1;1 1;3 4;4 2;7 0;8 0];
%plot(corner);

x=[-3 ;-1; 1; 3;  4;8];
y=[0  ,1 , -2, 4,  2,0];
% diffrentiate 
dx = diff(x) ;
dy = diff(y') ; 
dydx = [0 ;dy./dx] ; 
figure
plot(x,y)
hold on
plot(x,dxdy) ;

[Fatima Noneed]

Thank you so much sir, can you also do integration if you know how

[KSSV]

Read about trapz for integration.

[Fatima Noneed]

I did read and I tried using it but it showed an empty window without the graph, that’s why I came here for help

[KSSV]

Show us what you tried....let's debug your code.

[Fatima Noneed]

n=trapz(x,y)

Figure Plot(n)

[KSSV]

Good.....you should note that the integration value n gives you area under the curve so it will be a value i.e. a single number. How you can plot it?