using Plots
const PlotsBase = Plots.PlotsBase  #hide
unicodeplots()
import FileIO, FreeType  #hide
PlotsBase.reset_defaults()  #hide
using StableRNGs  #hide
rng = StableRNG(1234)  #hide
nothing  #hide

x = 1:0.5:20
y = 1:0.5:10
f(x, y) = begin
        (3x + y ^ 2) * abs(sin(x) + cos(y))
    end
X = repeat(reshape(x, 1, :), length(y), 1)
Y = repeat(y, 1, length(x))
Z = map(f, X, Y)
p1 = contour(x, y, f, fill = true)
p2 = contour(x, y, Z)
plot(p1, p2)
current()  #hide

# This file was generated using Literate.jl, https://github.com/fredrikekre/Literate.jl