Question

已知函數(shù)的圖象關(guān)于原點(diǎn)對(duì)稱，則________________．

Answer 1

-1

此題答案應(yīng)為-1
根據(jù)函數(shù)f(x)=的圖象關(guān)于原點(diǎn)對(duì)稱知，函數(shù)為奇函數(shù)，再有特殊點(diǎn)代入即：f（-1）=-f（1）可得到b的值．
解：∵f(-1)= =-f(1)=-
∴b=-1．
故答案為：-1．