52–56. Curves on surfaces Verify that the curve r ( t ) lies on the given surface. Give the name of the surface. r ( t ) = 〈 ( 3 + cos 15 t ) cos t , ( 3 + cos 15 t ) sin t , sin 15 t 〉 ; ( 3 − x 2 + y 2 ) 2 + z 2 = 1 ( Hint: See Example 4 .)
52–56. Curves on surfaces Verify that the curve r ( t ) lies on the given surface. Give the name of the surface. r ( t ) = 〈 ( 3 + cos 15 t ) cos t , ( 3 + cos 15 t ) sin t , sin 15 t 〉 ; ( 3 − x 2 + y 2 ) 2 + z 2 = 1 ( Hint: See Example 4 .)
Solution Summary: The author explains how the entire curve can be represented by a vector-valued function r(t)=langle x,y,z
Sketch the curve given in parametric form by r = ti+ sin tj + cos tk, 0 < t < 2π, and
write down an integral to determine its length. Calculate the length of this curve. Write
down a simple algebraic relation that determines a simple surface on which the curve
lies.
The length of this curve is:
(a) 2π√2
(b) 2π
(c) 2√2
(d) π/2√√2
The surface on which the curve lies is:
(i) a sphere x² + y²+z² = 1
(ii) a cylinder x² + y² = 1
(iii) an elliptic cylinder (3x)2 + y² = 1
(iv) a cylinder y²+z² = 1
22
Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point.
x = 1
Surfaces: x + y² + 2z = 4,
Point: (1,1,1)
Find the equations for the tangent line. Let z = 1-2t.
X =
=(Type an expression using t as the variable.)
Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point.
Surfaces:
x + y² + 2z = 5,
Point:
(2,1,1)
x = 2
Find the equations for the tangent line. Let z = 1 - 2t.
(Type an expression using t as the variable.)
X =
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Area Between The Curve Problem No 1 - Applications Of Definite Integration - Diploma Maths II; Author: Ekeeda;https://www.youtube.com/watch?v=q3ZU0GnGaxA;License: Standard YouTube License, CC-BY