Math Problem Statement
PERTEMUAN KE 16 UJIAN AKHIR SEMESTER.pdf
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Solution
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page_text = pdf_reader.pages[0].extract_text() page_textThe PDF you uploaded appears to contain a mathematical problem in Indonesian. From what I can extract, the problem statement is about determining solutions for different mathematical queries. Here's a translation of the relevant parts:
Problem 1:
Given the arithmetic sequence where the first term is 24 and the third term is 36, determine the sum of the sequence.
This sounds like a problem dealing with an arithmetic sequence (or deret aritmatika). To solve this, we can use the following known formulas for an arithmetic sequence:
-
— for the nth term, where:
- is the first term.
- is the common difference.
-
The sum of the first terms is given by:
However, since the second part of the problem mentions the sum of the sequence, I need to find first and then calculate the sum.
Steps:
-
Find the common difference : From the second term formula for an arithmetic sequence: Substituting the given values: Solve for :
-
Sum of the sequence: If the problem intends for us to find the sum of the first 3 terms, the sum can be calculated as: Substituting the known values:
Thus, the sum of the first 3 terms is 90.
Would you like more details on the steps or help with another question from the document? Here are some follow-up questions to explore further:
- How do you derive the formula for the sum of an arithmetic sequence?
- What happens if we are given a different number of terms, say 5, in the sequence?
- How can you determine the sum of an infinite arithmetic sequence?
- How do you handle geometric sequences compared to arithmetic ones?
- How do you find the nth term and the sum for geometric sequences?
Tip: To solve problems with sequences, always identify the first term and common difference (or ratio) first, as they are key to solving most sequence problems.
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Math Problem Analysis
Mathematical Concepts
Arithmetic Sequence
Sum of Sequence
Common Difference
Formulas
a_n = a_1 + (n-1) * d
S_n = n / 2 * (a_1 + a_n)
Theorems
Arithmetic Sequence Sum Formula
Suitable Grade Level
Grades 6-8
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