求导 y=0.5(0.5*ln((x+1)/(x-1))+arctanx)

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求导 y=0.5(0.5*ln((x+1)/(x-1))+arctanx)

求导 y=0.5(0.5*ln((x+1)/(x-1))+arctanx)
求导 y=0.5(0.5*ln((x+1)/(x-1))+arctanx)

求导 y=0.5(0.5*ln((x+1)/(x-1))+arctanx)
y=0.5(0.5*ln((x+1)/(x-1))+arctanx)
=0.5(0.5*ln(x+1)-0.5ln(x-1)+arctanx)
y'=0.25/(x+1)-0.25/(x-1)+0.5/(1+x^2)