l. Multiple Choice What is the surface area of the helicoid S defined by r : D = (0, 2π) × (0, 1) ↔ (v cos(u), v sin(u), u) ? [V √1 + t² dt ²/2 ( t√√²² + 1 + m (t + √√₁ + B²³)) +. = c Hint: A B D 8π 3 C π (√3+ ln (√2+√3)) с ㅠ E T (√2+ ln (1+√2)) None of the above I don't know SUBMIT

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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II. Multiple Choice
What is the surface area of the helicoid S defined by
(0, 2π) × (0, 1) → (v cos(u), v sin(u), u) ?
r: D
=
1
Hint:
1₁ √√1+t² dt = ²2 (t√²³² +1+m (t + √1 +ť²)
+ t²)) +
A ST
3
B π (√2+ In (1+√2))
C π (√3+ ln (√2+√³))
с ㅠ
1/2
D None of the above
E
I don't know
+ c
SUBMIT
Transcribed Image Text:II. Multiple Choice What is the surface area of the helicoid S defined by (0, 2π) × (0, 1) → (v cos(u), v sin(u), u) ? r: D = 1 Hint: 1₁ √√1+t² dt = ²2 (t√²³² +1+m (t + √1 +ť²) + t²)) + A ST 3 B π (√2+ In (1+√2)) C π (√3+ ln (√2+√³)) с ㅠ 1/2 D None of the above E I don't know + c SUBMIT
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