设函数[img=172x25]1803030bad375fe.png[/img]由方程组[img=106x51]1803030bb65da1c.png[/img]确定，则有（ ）．
A: [img=203x45]1803030bbe35d80.png[/img]
B: [img=203x45]1803030bc7e3460.png[/img]
C: [img=202x45]1803030bd4b1d57.png[/img]
D: [img=203x45]1803030be2a993f.png[/img]
A: [img=203x45]1803030bbe35d80.png[/img]
B: [img=203x45]1803030bc7e3460.png[/img]
C: [img=202x45]1803030bd4b1d57.png[/img]
D: [img=203x45]1803030be2a993f.png[/img]
举一反三
- 设函数[img=172x25]180302ea642c0eb.png[/img]由方程组[img=106x51]180302ea6c580f6.png[/img]确定，则有（ ）． A: [img=203x45]180302ea7948410.png[/img] B: [img=203x45]180302ea84f44a7.png[/img] C: [img=202x45]180302ea925ad3f.png[/img] D: [img=203x45]180302ea9e72448.png[/img]
- 设函数[img=172x25]18036546f95500b.png[/img]由方程组[img=106x51]180365470163b1f.png[/img]确定，则有（ ）． A: [img=203x45]180365470a6379c.png[/img] B: [img=203x45]18036547148e27f.png[/img] C: [img=202x45]180365471d0f5c3.png[/img] D: [img=203x45]1803654728f7e75.png[/img]
- 设函数[img=172x25]1802cec5c7a0042.png[/img]由方程组[img=106x51]1802cec5d070609.png[/img]确定，则有（ ）． A: [img=203x45]1802cec5e2161dc.png[/img] B: [img=203x45]1802cec5ee07151.png[/img] C: [img=202x45]1802cec5f62b5d0.png[/img] D: [img=203x45]1802cec601dd1d5.png[/img]
- 设函数[img=172x25]18038339bd7f7ee.png[/img]由方程组[img=106x51]18038339c576d22.png[/img]确定，则有（ ）． A: [img=203x45]18038339d1ec7c8.png[/img] B: [img=203x45]18038339dc77a5d.png[/img] C: [img=202x45]18038339e59ec31.png[/img] D: [img=203x45]18038339f0be876.png[/img]
- 设函数[img=172x25]180386b071ace00.png[/img]由方程组[img=106x51]180386b07a18ab0.png[/img]确定，则有（ ）． A: [img=203x45]180386b087dc800.png[/img] B: [img=203x45]180386b0933b562.png[/img] C: [img=202x45]180386b0a0910a7.png[/img] D: [img=203x45]180386b0abff808.png[/img]