Plotting a function

I have this assignment to plot a graph and print it out. The problem is I cannot get a plot of this function. I've searched for possible answers and have tried them but I get the error "??? Error using ==> mpower Matrix must be square." I know the usual solution is adding a . to the variable but that did not work. Here is the function I need plotted.

A = 1/((.8441^2-x^2)^2+(.8441*x/4)^2)^(1/2) where x goes from 0 to 2 in increments of lets say .01

If I could get some help on this, I would be greatly appreciative.

Answer 1

[Kevin Holst]

f = @(x) 1/((.8441^2-x^2)^2+(.8441*x/4)^2)^(1/2);
fplot(f,[0,2])

Answer 2

[Sean de Wolski]

You need a . before a ^ so that it is an element by element power instead of a matrix power.

doc vectorize

will probably be your friend.