设{a_n}与{b_n}为两个数列，下列说法正确的是(  )．

A a=4，b=2 B a=-4，b=2 C a=8，b=1 D a=-8，b=1

A 不连续 B 连续但不可导 C 可导但不是连续可导 D 连续可导

A <img src="https://www.beizhujiaoyu.com/uploads/202208/16497510675561.jpg" alt="" width="120" height="35" title="" align="" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/16497511446211.jpg" alt="" width="124" height="35" title="" align="" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164975119085311.jpg" alt="" width="127" height="35" title="" align="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164975123584901.jpg" alt="" width="135" height="35" title="" align="" />

A 2π B -2π C π D 0

A ①② B ②③ C ①③ D ②④

A A与B等价. B AB与BA相似 C A与B合同 D A²与B²合同

A <img src="https://www.beizhujiaoyu.com/uploads/202208/164974286543831.jpg" alt="" width="80" height="34" title="" align="" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164974295692811.jpg" alt="" width="75" height="36" title="" align="" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164974304872591.jpg" alt="" width="72" height="37" title="" align="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164974309894311.jpg" alt="" width="72" height="36" title="" align="" />

A Φ(y) B <img src="https://www.beizhujiaoyu.com/uploads/202208/164973581014431.jpg" alt="" width="60" height="29" title="" align="" /> C Φ(16y+8) D Φ(4y+80)

A <img src="https://www.beizhujiaoyu.com/uploads/202208/164974983054801.jpg" alt="" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164974989961701.jpg" alt="" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164974995196651.jpg" alt="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164975000467561.jpg" alt="" />