Why is my plot not showing?

Hello, I'm new to matlab and I don't know why my plots aren't showing anything

>>clc

>>x=linspace(-2,2,100);

>>f=(3*x)/(9*x.^2+1)

>>g=0.25*(x/((1/16)*x.^2))

>>h=-0.5*(x/(1+(0.25*x.^2)))

>>plot(x,f,'blue')

>>hold on

>>plot(x,g,'red')

>>hold on

>>plot(x,h,'black')

>>hold on

>>grid on

Answer 1

[Jon]

You need to use ./ Other wise you end up with just one value for f,g, and h

x=linspace(-2,2,100);
f=(3*x)./(9*x.^2+1) % ./
g=0.25*(x./((1/16)*x.^2)) % ./
h=-0.5*(x./(1+(0.25*x.^2))) % ./
plot(x,f,'blue')
hold on
plot(x,g,'red')
hold on
plot(x,h,'black')
hold on
grid on