如图,△ABO缩小后变为△A′B′O,其中A、B的对应点分别为A′,B′,A′,B′均在图中格点上,若线段AB上有一点P(m,n),则点P在A′B′上的对应点P′的坐标为( )
A:(m2,n)
B:(m,n)
C:(m2,n2)
D:(m,n2)
As a stopping point on the famous Silk Road, Loulan is believed __________ by sandstorms from AD 200 to AD 400.
解不等式组: {x−3<14x−4≥x+2 .
已知函数f(x)的导函数为f′(x),满足f(x)=2xf′(2)+x3,则f′(2)等于( ).