Positive solutions with fsolve in Maple

Question

In Maple I use

solve(abs(-5.58 * L^(-1.88)) = 3, L);

and I get the results

L = 1.39 or L = -1.39

but if I use

fsolve(abs(-5.58 * L^(-1.88)) = 3, L);

I only get the result

L = -1.39

How can I make sure I get the positive result using fsolve?

Answer 1

I'd avoid the avoid option. You can specify a range in which you want the solutions to fall, like this:

fsolve(abs(-5.58 * L^(-1.88)) = 3, L= 0..infinity);