how do I make an array where the value increases by a factor of 10?

My result needs to be

x=(.00001,.0001,.001,.01,.1,1,10,100,1000,10000)

and i just cant figure out how to get that in a simpler form to plot in a graph against a y value of

y=280*((x./200).^(0.2)+1)

I keep getting the error "Vectors must be the same length" and I dont know how to plot this

I have tried to use something like

for (.0001<=x)&&(x<=1000000000)
    x=.0001
    x=x*10
    y=x+2

plot(x,y,'o')
hold on
end
hold off

But that just doesnt work

Answer 1

[David Hill]

x=10.^(-5:4);
y=280*((x./200).^(0.2)+1);
semilogx(x,y);

[Steven Lord]

That's one way. The logspace function may also be of interest.