1. Let f(r) := We are interested in verifying that lim f(r) 3. r1/3 (a) Sketch an accurate graph of f over the domain (0, 2). (You will want a big enough picture.) (b) Let e = 1. On the same graph, sketch an error tube about the line y = 3 that would %3D be helpful in evaluating the limnit. (c) Solve the equations f(r) = 3-e and f(r) = 3 +c. Which solution is closer to %3D I= 1/3? Demonstrate this on your picture. (d) Given e = 1 find a o such that if r - 1/3 < 6 then - – 3

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1. Let f(r): , We are interested in verifying that lim f(r) 3.
1/3
(a) Sketch an accurate graph of f over the domain (0, 2). (You will want a big enough
picture.)
(b) Let e = 1. On the same graph, sketch an error tube about the line y = 3 that would
be helpful in evaluating the limit.
(c) Solve the equations f(r) = 3-e and f(r) = 3+ c. Which solution is closer to
I= 1/3? Demonstrate this on your picture.
(d) Given e =1 find a & such that if r- 1/3 <6 then E- 3 <e = 1. Justify your
answer using your work in (c). (You do not need to state a formal proof. Just
justify that your & works.)
(e) Now do it all again for a general e0.
i. Let e> 0, where e is small. On the same graph., sketch an error tube about the
line y = 3 that would be helpful in evaluating the limit.
ii. Sketch an accurate graph of f over the domain (0, 2). (You will want a big
enough picture.)
iii. Solve the equations f(r) = 3-e and f(r) = 3+e. Mathematically justify
which solution is closer tor=1/3? Demonstrate this on your picture.
iv. Given an e>0 find a & such that if r-1/3| < 8 then -3 < e. Justify your
answer using your work in (iii). (You do not need to state a formal proof. Just
justify that your o works.)
Transcribed Image Text:1. Let f(r): , We are interested in verifying that lim f(r) 3. 1/3 (a) Sketch an accurate graph of f over the domain (0, 2). (You will want a big enough picture.) (b) Let e = 1. On the same graph, sketch an error tube about the line y = 3 that would be helpful in evaluating the limit. (c) Solve the equations f(r) = 3-e and f(r) = 3+ c. Which solution is closer to I= 1/3? Demonstrate this on your picture. (d) Given e =1 find a & such that if r- 1/3 <6 then E- 3 <e = 1. Justify your answer using your work in (c). (You do not need to state a formal proof. Just justify that your & works.) (e) Now do it all again for a general e0. i. Let e> 0, where e is small. On the same graph., sketch an error tube about the line y = 3 that would be helpful in evaluating the limit. ii. Sketch an accurate graph of f over the domain (0, 2). (You will want a big enough picture.) iii. Solve the equations f(r) = 3-e and f(r) = 3+e. Mathematically justify which solution is closer tor=1/3? Demonstrate this on your picture. iv. Given an e>0 find a & such that if r-1/3| < 8 then -3 < e. Justify your answer using your work in (iii). (You do not need to state a formal proof. Just justify that your o works.)
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