Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
![**SECTION 11.4 The Comparison Tests**
*Page 767*
(b) **Interpret**
\[ t_n - t_{n+1} = [\ln(n + 1) - \ln n] - \frac{1}{n + 1} \]
as a difference of areas to show that \( t_n - t_{n+1} > 0 \). Therefore \(\{t_n\}\) is a decreasing sequence.
(c) Use the Monotonic Sequence Theorem to show that \(\{t_n\}\) is convergent.
**Exercise 45.** Find all positive values of \( b \) for which the series \(\sum_{n=1}^{\infty} b^{\ln n}\) converges.
**Exercise 46.** Find all values of \( c \) for which the following series converges.
\[
\sum_{n=1}^{\infty} \left( \frac{c}{n} - \frac{1}{n+1} \right)
\]
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The text involves applying sequence comparison tests and determining the convergence of sequences by interpreting the differences as areas and using the Monotonic Sequence Theorem. The exercises focus on evaluating the convergence properties for different values of \( b \) and \( c \).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcba78722-b839-46bb-b46d-8bfd06aff38d%2Fe90c4be8-2b12-4bca-bb5b-30127ea043d5%2F4hf3vhk_processed.jpeg&w=3840&q=75)
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