A.與函數(shù)y=e^x的圖象關(guān)于y軸對(duì)稱(chēng)

B.與函數(shù)y=e^x的圖象關(guān)于坐標(biāo)原點(diǎn)對(duì)稱(chēng)

C.與函數(shù)y=e ^-x的圖象關(guān)于y軸對(duì)稱(chēng)

D.與函數(shù)y=e ^-x的圖象關(guān)于坐標(biāo)原點(diǎn)對(duì)稱(chēng)

A.a^a＜b^b                   B.b^a＜b^b                    C.a^a＜b^a                  D.b^b＜a^a

A.第一象限                        B.第二象限

C.第三象限                        D.第四象限

A.a=1或a=2                                B.a=1

C.a=2                                         D.a＞0，且a≠1

①y=，②y=4^x，③y=3^2x，④y=3×2^x，⑤y=3^x+1，⑥y=-3^x

A.0                  B.1                  C.2                  D.3

A. 0個(gè)              B.1個(gè)               C.2個(gè)               D.3個(gè)