在等比数列中,[img=92x17]17da5acefe98fa3.jpg[/img],则q( )
A: 3
B: 4
C: 3或4
D: 2
A: 3
B: 4
C: 3或4
D: 2
举一反三
- 在等比数列{an}中,a1=27,[img=32x42]17e0c014f67ecc6.png[/img],an=8,则n=( ) A: 2 B: 3 C: 4 D: 5
- 求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
- 若[img=82x21]17e0c014e7b52d9.png[/img]成等比数列,则x=( ) A: 1 B: -3 C: 1或-3 D: 2或3
- 17 一个栈的输入序列为1 2 3 4 5,则下列序列中不可能是栈的输出序列的是( ) A: 5 4 1 3 2 B: 2 3 4 1 5 C: 2 3 1 4 5 D: 1 5 4 3 2
- 求不定积分[img=115x46]17da65382f8e1b9.png[/img]; ( ) A: x - (5*log(x + 1))/4 - (3*log(x - 3)) B: (5*log(x + 1))/4 - (3*log(x - 3)) C: x - (5*log(x + 1))/4 - (3*log(x - 3))/4 D: (5*log(x + 1))/4 - (3*log(x - 3))/4