% A=[3 2 -1; 2 -2 4; -1 0.5 -1]
% B=[1;-2;0]
% X=inv(A)*B
% X = A\B
%X=B/A
clc;clear all; close all
x=0:10;
y=x.^2;
y(5)=50;
x1=0:0.01:10;
figure(1)
plot(x,y,'o')
grid on
%y1=interp1(x,y,x1)
y1=spline(x,y,x1)
figure(2)
plot(x1,y1,'-x')
grid on