Walking on a surface Consider the following surfaces specified in the form z = f ( x, y ) and the oriented curve C in the xy-plane. a. In each case, find z’ ( t ) . b. Imagine that you are walking on the surface directly above the curve C in the direction of positive orientation. Find the values of t for which you are walking uphill ( that is, z is increasing ) . 54. z = 4 x 2 − y 2 + 1 , C : x = cos t , y = sin t ; 0 ≤ t ≤ 2 π
Walking on a surface Consider the following surfaces specified in the form z = f ( x, y ) and the oriented curve C in the xy-plane. a. In each case, find z’ ( t ) . b. Imagine that you are walking on the surface directly above the curve C in the direction of positive orientation. Find the values of t for which you are walking uphill ( that is, z is increasing ) . 54. z = 4 x 2 − y 2 + 1 , C : x = cos t , y = sin t ; 0 ≤ t ≤ 2 π
Solution Summary: The author explains that the value of zprime is -5mathrmsin2t.
Walking on a surfaceConsider the following surfaces specified in the form z = f(x, y) and the oriented curve C in the xy-plane.
a. In each case, find z’ (t).
b. Imagine that you are walking on the surface directly above the curve C in the direction of positive orientation. Find the values of t for which you are walking uphill (that is, z is increasing).
54.
z
=
4
x
2
−
y
2
+
1
,
C
:
x
=
cos
t
,
y
=
sin
t
;
0
≤
t
≤
2
π
Use the method of washers to find the volume of the solid that is obtained
when the region between the graphs f(x) = √√2 and g(x) = secx over the
interval ≤x≤ is rotated about the x-axis.
5
Use the method of disks to find the volume of the solid that is obtained
when the region under the curve y = over the interval [4,17] is rotated
about the x-axis.
3. Use the method of washers to find the volume of the solid that is obtained
when the region between the graphs f(x) = √√2 and g(x) = secx over the
interval ≤x≤ is rotated about the x-axis.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.
Numerical Integration Introduction l Trapezoidal Rule Simpson's 1/3 Rule l Simpson's 3/8 l GATE 2021; Author: GATE Lectures by Dishank;https://www.youtube.com/watch?v=zadUB3NwFtQ;License: Standard YouTube License, CC-BY