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 ) . 55. z = 1 − x 2 − y 2 , C : x = e − t , y = e − t t ≥ 1 2 ln 2
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 ) . 55. z = 1 − x 2 − y 2 , C : x = e − t , y = e − t t ≥ 1 2 ln 2
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).
55.
z
=
1
−
x
2
−
y
2
,
C
:
x
=
e
−
t
,
y
=
e
−
t
t
≥
1
2
ln
2
In the xy-plane, the graphs of the linear
function and the exponential function E
both pass through the points (0,2) and (1,6)
The function f is given by
f(x) = L(x) - E(x). What is the maximum
value of f?
A
0.007
B
0.172
C
0.540
D 1.002
n
3
5
ст
7
ап
85
95
105
The table gives values of an arithmetic
sequence an for selected values of n. Which
of the following linear functions is
αρ
constructed from the initial value an (with
n = 0) and common difference of the
sequence?
A
f(x) = 70+5x
B
f(x) = 70+10x
C
f(x) = 75+5x
D
f(x) = 75+10x
3. Submit answer Practice similar
Calculate the integral approximation Se for
So
dz.
L-de
4
1.
Submit answer
Answers
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