@testset "4.6 Cosecant" begin
    include("4.6.0 (a csc)^m (b trg)^n.jl")
    include("4.6.1.2 (d csc)^n (a+b csc)^m.jl")
    include("4.6.1.3 (d cos)^n (a+b csc)^m.jl")
    include("4.6.1.4 (d cot)^n (a+b csc)^m.jl")
    include("4.6.11 (e x)^m (a+b csc(c+d x^n))^p.jl")
    include("4.6.3.1 (a+b csc)^m (d csc)^n (A+B csc).jl")
    include("4.6.4.2 (a+b csc)^m (d csc)^n (A+B csc+C csc^2).jl")
    include("4.6.7 (d trig)^m (a+b (c csc)^n)^p.jl")
end
