Re: [Haskell-beginners] Add parenthesis to Sin/Cos expressions

a function that is supposed to add parenthesis to sin/cos expressions. a) Sin 5 + 3 -> Sin(5) + 3 b) Sin Cos (5+3) -> Sin (Cos(5+3)) c) Sin Cos 5 * 3 -> Sin(Cos(5)) * 3

are you looking for textual representation or actual Haskell code which runs? if actual code, these examples may be re-written like this: a) sin 5 + 3 b) sin $ cos $ 5 + 3 c) sin (cos 5) * 3