clc;
clear;
close all;

x = linspace(0,2,1000);
f = 3*x.^2 + 2*x;


I_trapz = trapz(x,f);


I_quad = quad(@(x) 3*x.^2 + 2*x,0,2);

fprintf('Integralis ar trapz: %.6f\n',I_trapz);
fprintf('Integralis ar quad: %.6f\n',I_quad);
fprintf('Analitiskais: 12\n');


figure;
area(x,f);
grid on;
xlabel('x');
ylabel('f(x)');
title('Laukums zem funkcijas f(x) = 3x^2 + 2x');

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