НС

x = linspace(-10, 10);
y = x.^3 - 8*x.^2;

pNS = linspace(-10, 10, 200);
tNS = pNS.^3 - 8*pNS.^2;

net1 = newff(pNS, tNS, 6, {'tansig' 'purelin'});
net1.trainParam.epochs = 500;
net1 = train(net1, pNS, tNS);

y1 = sim(net1, pNS);
plot(pNS, y1,'o', pNS, tNS, '+')
grid on;

e = abs(y1 - tNS);
plot(e)
figure;


%plot(x, y, 's')