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We obtain Voronovskaya-type theorems for the partial sums of Fourier series using the second order Cesáro method of summation. Then we obtain two versions of Voronovskaya-type theorems for Fejér operators and finally we deduce an integral identity.

Summation methods applied to Voronovskaya-type theorems for the partial sums of Fourier series and for Fejér operators