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Find the following derivatives. Zg and z₁, where z=e 9x+y x=2st, and y = 3s + 2t =9e9x+y əx (Type an expression using x and y as the variables.) əx ds (Type an expression usings and t as the variables.) dz =/e4x+y ду (Type an expression using x and y as the variables.) 3 ds (Type an expression using s and t as the variables.) 𐐀x at (Type an expression using s and t as the variables.) dy 2 dt (Type an expression using s and t as the variables.) Zs= (Type an expression usings and t as the variables.) Z₁ = (Type an expression using s and t as the variables.)