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设f(x),g(x)均在[a,b]上可积,则Cauchy—Schwarz不等式可加强为:[∫a^bf(x)g(x)dx]^2≤∫a^bf^2(x)dx∫a^bg^2(x)dx+2/b-a∫a^bf(x)g(x)dx∫a^bf(x)d(x)∫a^bg(x)dx-1/b-a∫a^bf^2(x)dx.[∫a^bg(x)dx]^2-1/b-a∫a^bg^2(x)dx[∫a^bf(x)dx]^2.由此推广了文[1]结果