摘要: f:[0,1]→R满足:(1)任意x∈[0, 1], f(x)≥0,(2)f当x, y, x+y∈[0, 1]时.f(x)+f(y)≤f(x+y).试求最小常数c.对满足的函数f(x)都有f(x)≤cx.

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