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Lesson Example Discussion Quiz: Class Homework

Step-4

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	Prove that 9,13,17,21,25,29 is an Ap.
2	Step	Given series is: 9,13,17,21,25,29
3	Clue	To prove that the sequence is AP, find the common difference between two consecutive terms.
4	Clue	Let	\$ a_1 = 9,a_2 = 13,a_3 = 17\$
5	Formula:	Common difference	\$ d = a_2 - a_1\$
6	Hint	Substitute \$a_1,a_2\$ values in formula	\$d = 13 - 9 \$
7	Step	After simplification	\$ d = 4 \$
8	Clue	Substitute \$a_2,a_3\$ values in formula	\$d = a_3 - a_2 = 17 - 13 \$
9	Step	After simplification	\$ d = 4 \$
10	Step	Hence,9,13,17,21,25,29 is an AP with a common difference of 4
11		Answer	C

Step

Type

Explanation

Answer

Problem

Prove that 9,13,17,21,25,29 is an Ap.

Step

Given series is: 9,13,17,21,25,29

Clue

To prove that the sequence is AP, find the common difference between two consecutive terms.

Clue

Let

\$ a_1 = 9,a_2 = 13,a_3 = 17\$

Formula:

Common difference

\$ d = a_2 - a_1\$

Hint

Substitute \$a_1,a_2\$ values in formula

\$d = 13 - 9 \$

Step

After simplification

\$ d = 4 \$

Clue

Substitute \$a_2,a_3\$ values in formula

\$d = a_3 - a_2 = 17 - 13 \$

Step

After simplification

\$ d = 4 \$

Step

Hence,9,13,17,21,25,29 is an AP with a common difference of 4

Answer

Tutor: Questions

Seq	Type	Question
1	Problem	What did you learn from this problem?
2	Clue	What did you learn from the clues?
3	Hint	What did you learn from the Hints?
4	Step	What did you learn from the Steps?
5	Step	How can we improve the Steps?

Seq

Type

Question

Audio

Problem

What did you learn from this problem?

Clue

What did you learn from the clues?

Hint

What did you learn from the Hints?

Step

What did you learn from the Steps?

Step

How can we improve the Steps?