设曲线[img=182x27]180384f4ba41efb.png[/img]，则[img=95x48]180384f4c2ba5d3.png[/img]
举一反三
- 设[img=127x53]17f1b3d6db98b83.jpg[/img]，f（x）=arctanΧ，则[img=56x55]17f1b3d82842941.jpg[/img]=（）。 A: π B: 3π/4 C: -3π/4 D: 2π
- 设曲线[img=182x27]18039223bb40117.png[/img]，则[img=95x48]18039223c329c1f.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]