Формула n-го члена арифметической прогрессии

Quiz
•
Mathematics
•
9th Grade
•
Medium
Ольга Филатова
Used 28+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Укажите последовательность чисел, которая является арифметической прогрессией
2; 3; 5; 8; ...
2; -2; -6; -10; ...
2; 4; 8; 16; ...
2; -1; 10; -7; ...
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Укажите первые три члена арифметической прогрессии (an), если a1 = 0,5 , d = 1,5
0,5; 1,5; 2,5
0,5; -1; -2,5
0,5; 0,75; 1,125
0,5; 2; 3,5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Укажите первые четыре члена арифметической прогрессии (an), если a1 = -3, d = -2,3
-3; -2,6; -4,9; -7,2
-3; -0,7; 1,6; 3,9
-3; -5,3; -7,6; -9,9
-3; 6,9; -15,87; 36,501
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Найдите восьмой член арифметической прогрессии, если (an), если a1 = 2/3, d = -1/3
3
-3
-2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Найдите девятый член арифметической прогрессии, если a1 = -1/4, d = 3/4
7
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Найдите разность арифметической прогрессии, если a1 = 21, a8 = 49
4
10
-4
3,5
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Найдите разность арифметической прогрессии, если a1 = -18, a10 = 18
0
4
-4
3,6
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