Forestry The Doyle Lux Rule is one of several methods used to determine the lumber yield of a log (in board-feet) in terms of its diameter d (in inches) and its length I . (in feet). The number of board-feet is N ( d , L ) = ( d − 4 4 ) L . (a) Find the number of board-feet of lumber in a log 22 inches in diameter and 12 feet in length. (b) Find N (30, 12).
Forestry The Doyle Lux Rule is one of several methods used to determine the lumber yield of a log (in board-feet) in terms of its diameter d (in inches) and its length I . (in feet). The number of board-feet is N ( d , L ) = ( d − 4 4 ) L . (a) Find the number of board-feet of lumber in a log 22 inches in diameter and 12 feet in length. (b) Find N (30, 12).
Solution Summary: The author calculates the number of board feet of lumber in a log that is 22 inches in diameter and 12 feet in length.
Forestry The Doyle Lux Rule is one of several methods used to determine the lumber yield of a log (in board-feet) in terms of its diameter d (in inches) and its length I. (in feet). The number of board-feet is
N
(
d
,
L
)
=
(
d
−
4
4
)
L
.
(a) Find the number of board-feet of lumber in a log 22 inches in diameter and 12 feet in length.
EXAMPLE 3
Find
S
X
√√2-2x2
dx.
SOLUTION Let u = 2 - 2x². Then du =
Χ
dx =
2- 2x²
=
信
du
dx, so x dx =
du and
u-1/2 du
(2√u) + C
+ C (in terms of x).
Let g(z) =
z-i
z+i'
(a) Evaluate g(i) and g(1).
(b) Evaluate the limits
lim g(z), and lim g(z).
2-12
(c) Find the image of the real axis under g.
(d) Find the image of the upper half plane {z: Iz > 0} under the function g.
Chapter 13 Solutions
Bundle: Calculus: Early Transcendental Functions, 6th + WebAssign Printed Access Card for Larson/Edwards' Calculus, Multi-Term
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