设曲线[img=182x27]18039223bb40117.png[/img]，则[img=95x48]18039223c329c1f.png[/img]
举一反三
- 设曲线[img=182x27]180384f4ba41efb.png[/img]，则[img=95x48]180384f4c2ba5d3.png[/img]
- 设曲线[img=182x27]1803a1e137c84fc.png[/img]，则[img=95x48]1803a1e13fdcf06.png[/img]
- 设曲线[img=182x27]18036c84121804b.png[/img]，则[img=95x48]18036c841a7c1bb.png[/img]
- 设曲线[img=182x27]18031ade20a55c2.png[/img]，则[img=95x48]18031ade28bc608.png[/img]
- 设曲线[img=182x27]1803922b579b9ca.png[/img]，则[img=95x48]1803922b5f02309.png[/img]