f(x)在[0,+∞)上有二阶连续导数,且f''(x)≥a>0,f(0)=0,f'(0)扫码下载作业帮搜索答疑一搜即得

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f(x)在[0,+∞)上有二阶连续导数,且f''(x)≥a>0,f(0)=0,f'(0)

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