using Plots
fschar(x,b) = b*x^2

plot_fschar() = begin

   x = -1:0.01:1

   blist = [1/2,1,3/2,2]
   p = plot([],[],label=nothing)
   for b in blist
       y = fschar.(x,b)
       plot!(p,x,y,label="b=$b")
   end
   xlabel!("x ∈ [-1,1]")
   ylabel!("f_b(x)")
   p
end

plot_fschar()

"""
Here you can either initialize an empty plot (i.e. a plot that shows nothing) like I do with plot([],[],label=nothing), recall [] is an empty vector,
or change the for loop to use an index and create p if i=1 and then just change it with plot!

Once again one function that does everything for us when we call it, nothing is defined on the global (memory) scope.
"""