Lesson Example Discussion Quiz: Class Homework |
Step-2 |
Title: Common ratio |
Grade: 9-a Lesson: S4-L3 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Find the common difference for the following AP: 2,8,14,20,26,32,38 . |
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2 |
Step |
Given AP: 2,8,14,20,26,32,38 . |
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3 |
Clue |
Let |
\$ a_1 = 2,a_2 = 8,a_3 = 14,a_4 = 20\$ |
4 |
Formula: |
Common difference |
\$ d = a_2 - a_1\$ |
5 |
Hint |
Substitute \$a_1,a_2\$ values in formula |
\$d = 8 - 2 \$ |
6 |
Step |
After simplification |
\$ d = 6 \$ |
7 |
Clue |
Substitute \$a_2,a_3\$ values in formula |
\$d = a_3 - a_2 = 14 - 8 \$ |
8 |
Step |
After simplification |
\$ d = 6 \$ |
9 |
Hint |
Substitute \$a_3,a_4\$ values in formula |
\$d = a_4 - a_3 = 20 - 14 \$ |
10 |
Step |
After simplification |
\$ d = 6 \$ |
11 |
Step |
Hence,the common difference for the sequence 5,10,15,20,… is |
6 |
12 |
Answer |
B |
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Tutor: Questions
| Seq | Type | Question | Audio |
|---|---|---|---|
1 |
Problem |
What did you learn from this problem? |
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2 |
Clue |
What did you learn from the clues? |
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3 |
Hint |
What did you learn from the Hints? |
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4 |
Step |
What did you learn from the Steps? |
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5 |
Step |
How can we improve the Steps? |
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