a(x)/b(x)导数是[a'(x)b(x)-a(x)b'(x)]/b(x)^2//怎么推导

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a(x)/b(x)导数是[a'(x)b(x)-a(x)b'(x)]/b(x)^2//怎么推导

a(x)/b(x)导数是[a'(x)b(x)-a(x)b'(x)]/b(x)^2//怎么推导
a(x)/b(x)导数是[a'(x)b(x)-a(x)b'(x)]/b(x)^2//怎么推导

a(x)/b(x)导数是[a'(x)b(x)-a(x)b'(x)]/b(x)^2//怎么推导