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For an odd prime $p$ such that $p\\equiv 3\\bmod 4$ and odd $n$ with $k|n$, the differential spectrum of the power function $x^{\\frac{p^n+1}{p^k+1}+\\frac{p^n-1}{2}}$ in $\\mathbb{F}_{p^n}$ is also derived. From their differential spectrums, the differential uniformities of these two power functions are determined. 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