
Ciąg arytmetyczny
Authored by Katarzyna Romaszko
Mathematics
9th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ciąg arytmetyczny dany jest wzorem: an = 2n - 1. Różnica tego ciągu wynosi:
-1
1
2
3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Wzór na 120. wyraz ciągu arytmetycznego ma postać:
a120 = a1 + 120r
a120 = a1 - 120r
a120 = a1 + 119r
a120 = a1 - 119r
a120 = a1 + 121r
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Trzydziesty wyraz ciągu arytmetycznego: 1, 11, 21, 31, 41 ... wynosi:
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
W ciągu arytmetycznym dane są: a3 = 13 i a5 = 39.
Wtedy wyraz a1 jest równy?
13
0
-13
26
-26
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pierwszy wyraz ciągu arytmetycznego o różnicy r=-5 jest równy 5. Oblicz dziesiąty wyraz ciągu.
35
-40
20
-35
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Liczby 2,−1,−4 są trzema początkowymi wyrazami ciągu arytmetycznego określonego dla liczb naturalnych n≥1.
Wzór ogólny tego ciągu ma postać:
an = −3n+5
an = n−3
an =−n+3
an = 3n−5
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
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