Free Exam: Progresii aritmetice si geometrice
Number of Questions in Test: 10
Number of Questions in Preview: 5
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Completează cu încă doi termeni şirul următor:
2 ,7 ,12 ,17 ,...
2 ,7 ,12 ,17 ,...
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 2
Completează cu încă doi termeni şirul următor:
3 ,12 ,48 ,192,...
3 ,12 ,48 ,192,...
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 3
Progresia aritmetică (a[sub]n[/sub])[sub]n>0 [/sub]de raţie r este definită prin anumite elemente date.
Determinaţi a[sub]14[/sub] daca a[sub]1[/sub]=3, r=5.
Determinaţi a[sub]14[/sub] daca a[sub]1[/sub]=3, r=5.
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 4
Progresia geometrică (bn)n>0 de raţie q este definită prin anumite elemente date.
Determinaţi b[sub]4[/sub] daca b[sub]1[/sub]=3, q=2.
Determinaţi b[sub]4[/sub] daca b[sub]1[/sub]=3, q=2.
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 5
Fie (a[sub]n[/sub]) o progresie aritmetica. Daca a[sub]20[/sub]=58 si r=3, calculaţi a[sub]1[/sub] .
| Type: | Free text |
| Points: | 1 |
| Randomize answers: | No |