If the positive-value sequences [math: {xn},{yn}]\{x_n\}, \{y_n\} have limits 5 and 3 respectively, what are the limits of the sequences [math: {xn+yn+1}]\{x_n+y_{n+1}\}, [math: {xny2n}]\{x_ny_{2n}\}, [math: {2xn}]\{2x_n\} and [math: {xnyn}]\{x_n^{y_n}\} .Enter your answer in the form *,*,*,*

Question

BlackTom AI · Accepted Answer

We are given that the positive-value sequences {x_n} and {y_n} converge to 5 and 3, respectively. This means:
- lim x_n = 5 and lim y_n = 3.
- Since limits preserve simple operations under standard algebra, we can evaluate the limits of composed expressions by replacing x_n and y_n with their limits where appropriate, while also noting that limits of shifted sequences like y_{n+1} equal the limit of y_n if the limit exists.

First expression: x_n + y_{n+1}
- As n → ∞, x_n → 5 and y_{n+1} → lim y_n = 3.
- Therefore, x_n + y_{n+1} → 5 + 3 = 8.

Second expression: x_n y_{2n}
- Here x_n → 5 and y_{2n} → lim y_n = 3, since the subsequence y_{2n} converges to the same limit as y_n when the limit exists.
- Thus, x_n y_{2n} → 5 × 3 = 15.

Third expression: 2 x_n
- This is simply a scalar multiple of x_n, so 2 x_n → 2 × 5 = 10.

Fourth expression: x_n^{y_n}
- With x_n → 5 and y_n → 3, and given that all terms are positive, the limit of the power is 5^3.
- Therefore, x_n^{y_n} → 5^3 = 125.

Collecting the limits, the sequence limits are 8, 15, 10, 125 respectively.

If the positive-value sequences [math: {xn},{yn}]\{x_n\}, \{y_n\} have limits 5 and 3 respectively, what are the limits of the sequences [math: {xn+yn+1}]\{x_n+y_{n+1}\}, [math: {xny2n}]\{x_ny_{2n}\}, [math: {2xn}]\{2x_n\} and [math: {xnyn}]\{x_n^{y_n}\} .Enter your answer in the form ,,,

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If the positive-value sequences \(\{x_n\}, \{y_n\}\) have limits 5 and 3 respectively, what are the limits of the sequences \(\{x_n+y_{n+1}\}\), \(\{x_ny_{2n}\}\), \(\{2x_n\}\) and \(\{x_n^{y_n}\} \).Enter your answer in the form ,,,

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Let { 𝑎 𝑛 } 𝑛 = 0 ∞ be a sequence. Which statements are equivalent to " { 𝑎 𝑛 } 𝑛 = 0 ∞ is divergent to ∞ " ? Select all the correct answers.

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If the positive-value sequences [math: {xn},{yn}]\{x_n\}, \{y_n\} have limits 5 and 3 respectively, what are the limits of the sequences [math: {xn+yn+1}]\{x_n+y_{n+1}\}, [math: {xny2n}]\{x_ny_{2n}\}, [math: {2xn}]\{2x_n\} and [math: {xnyn}]\{x_n^{y_n}\} .Enter your answer in the form *,*,*,*

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类似问题

Let \(f(x) = x^2 \sin(x)\) and let \(x_n=1/n\). What is the limit of the sequence \(\{f(x_n)\}\)?

If the positive-value sequences \(\{x_n\}, \{y_n\}\) have limits 5 and 3 respectively, what are the limits of the sequences \(\{x_n+y_{n+1}\}\), \(\{x_ny_{2n}\}\), \(\{2x_n\}\) and \(\{x_n^{y_n}\} \).Enter your answer in the form *,*,*,*

Let [math: f(x)=x2sin⁡(x)]f(x) = x^2 \sin(x) and let [math: xn=1/n]x_n=1/n. What is the limit of the sequence [math: {f(xn)}]\{f(x_n)\}?

Let [math: f(x)=x2]f(x) = x^2 and [math: xn=2+1/n]x_n=2+1/n.What is the limit of the sequence [math: {f(xn)}]\{f(x_n)\}?

Let { 𝑎 𝑛 } 𝑛 = 0 ∞ be a sequence. Which statements are equivalent to " { 𝑎 𝑛 } 𝑛 = 0 ∞ is divergent to ∞ " ? Select all the correct answers.

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

更多留学生实用工具

希望你的学习变得更简单

If the positive-value sequences [math: {xn},{yn}]\{x_n\}, \{y_n\} have limits 5 and 3 respectively, what are the limits of the sequences [math: {xn+yn+1}]\{x_n+y_{n+1}\}, [math: {xny2n}]\{x_ny_{2n}\}, [math: {2xn}]\{2x_n\} and [math: {xnyn}]\{x_n^{y_n}\} .Enter your answer in the form ,,,

If the positive-value sequences \(\{x_n\}, \{y_n\}\) have limits 5 and 3 respectively, what are the limits of the sequences \(\{x_n+y_{n+1}\}\), \(\{x_ny_{2n}\}\), \(\{2x_n\}\) and \(\{x_n^{y_n}\} \).Enter your answer in the form ,,,