已知<img src="https://static.zxtiku.com/wangke/imgs/topic/04c163c90bf3fd4dab2129f2a6dc5980.jpg"/>时，<img src="https://static.zxtiku.com/wangke/imgs/topic/ff31aba2dbdd43577defc52f1bc3cfbf.jpg"/>与<img src="https://static.zxtiku.com/wangke/imgs/topic/7c85476a729f745a8287cf2420fdbcf1.jpg"/>等价，则<img src="https://static.zxtiku.com/wangke/imgs/topic/fbcbd558120d1a7061f91e888075a20f.jpg"/>　　　．