PLEASE HELPPP Today in Algebra class, Ethan learned about the expressions (1+ 1/x)^x and e, but he can't remember if (1+1/x)^x gets closer and closer to e as x gets larger and larger, or if (1+1/x)^x get further and further away from e as x gets larger and larger. He's going to do a test to figure it out.
part l:What is the value of e to five decimal places?
Part II: What is the value of (1+1/x)^x when x = 5? Give your answer to five decimal places.
Part III: What is the value of (1+1/x)^x when x = 25? Give your answer to five decimal places.
Part IV: What is the value of (1+1/x)^x when x = 125? Give your answer to five decimal
places.
Part V: Is (1+1/x)^x getting closer and closer to e as x is getting larger and larger, or is getting further and further away from e as x is getting larger and larger?

Question

25-09-2020
Mathematics

contestada

PLEASE HELPPP Today in Algebra class, Ethan learned about the expressions (1+ 1/x)^x and e, but he can't remember if (1+1/x)^x gets closer and closer to e as x gets larger and larger, or if (1+1/x)^x get further and further away from e as x gets larger and larger. He's going to do a test to figure it out.
part l:What is the value of e to five decimal places?
Part II: What is the value of (1+1/x)^x when x = 5? Give your answer to five decimal places.
Part III: What is the value of (1+1/x)^x when x = 25? Give your answer to five decimal places.
Part IV: What is the value of (1+1/x)^x when x = 125? Give your answer to five decimal
places.
Part V: Is (1+1/x)^x getting closer and closer to e as x is getting larger and larger, or is getting further and further away from e as x is getting larger and larger?

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jimthompson5910 jimthompson5910 · Answer 1 · 2020-09-25T21:39:03+02:00

Part 1

Use your calculator to have it display [tex]e \approx 2.71828182846[/tex] and round that to five decimal places to get [tex]e \approx 2.71828[/tex]

Answer: 2.71828

=============================================

Part 2

Plug in x = 5 to get

[tex]y = \left(1 + \frac{1}{x}\right)^x\\\\y = \left(1 + \frac{1}{5}\right)^5\\\\y = 2.48832\\\\[/tex]

Answer: 2.48832

=============================================

Part 3

Now plug in x = 25

[tex]y = \left(1 + \frac{1}{x}\right)^x\\\\y = \left(1 + \frac{1}{25}\right)^{25}\\\\y \approx 2.66583633148742\\\\y \approx 2.665 84\\\\[/tex]

Answer: 2.66584

=============================================

Part 4

Plug in x = 125

[tex]y = \left(1 + \frac{1}{x}\right)^x\\\\y = \left(1 + \frac{1}{125}\right)^{125}\\\\y \approx 2.70748783321031\\\\y \approx 2.70749\\\\[/tex]

Answer: 2.70749

=============================================

Part 5

As x gets larger, it appears (1+1/x)^x is getting closer and closer to e = 2.71828 since the sequence of answers (from parts 2 through 4) was 2.48832, 2.66584, 2.70749.