%ZADANIE 11
clc;
clear;
X=[1 2 3 4 5];
Y=[ 2 1 5 6 1];
a=polyfit(X,Y,4)*24
%ZADANIE 12
A=[0 0.1 0.2 0.3 0.4 0.5 0.6];
B=[2.9 2.8 2.7 2.3 2.1 2.1 1.7];
b=polyfit(A,B,1)
z=b(1)*A+b(2)
plot(A,B,A,z)
%ZADANIE 13
C=[ 20.5 32.7 51.0 73.2 95.7];
D=[765 826 873 942 1032];
c=polyfit(C,D,1)
g=c(1)*C+c(2)
plot(C,D,C,g)
%ZADANIE 14
E=[0 0.2 0.4 0.6 0.8 1.0];
F=[1.026 0.768 0.648 0.401 0.272 0.193];
d=polyfit(E,F,2);
e=d(1)*E+d(2)
plot(E,F,E,e)