[일반] f(x)>0, f'(x)>0, f''(x)<0인 함수 f(x)

[익명(223.38)]

뭐임

[뽈펜아공부나해라(122.32)]

logx ,x>1

[기괴공학도(mecheng98)]

y = sqrt x, x > 0. - dc App