Find the gradient of the function f(x, y)=3 x e^{x y^{4}}+2 \cos \left(y^{2}\right) \left\langle 3 e^{x y^{4}}-3 x y^{4} e^{x y^{4}}, 12 x^{2} y^{3} e^{x y^{4}}-4 y \sin \left(y^{2}\right)\right\rangle \left(3 e^{x y^{4}}-3 x y^{4} e^{x y^{4}}, 12 x^{2} y^{3} e^{x y^{4}}+4 y \sin \left(y^{2}\right)\right\rangle \left(3 e^{x y^{4}}+3 x y^{4} e^{x y^{4}}, 12 x^{2} y^{3} e^{x y^{4}}+4 y \sin \left(y^{2}\right)\right\rangle \left(3 e^{x y^{4}}+3 x y^{4} e^{x y^{4}}, 12 x^{2} y^{3} e^{x y^{4}}-4 y \sin \left(y^{2}\right)\right)

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