According to National Football League (NFL) rules, all crossbars on goalposts must be 10 ft from the ground. However, teams are allowed some freedom on how high the vertical posts on each end may extend, as long as they measure at least 30 ft . A measurement on an NFL field taken 100 yd from the goalposts yields an angle of 7.8 ° from the ground to the top of the posts. If the crossbar is 10 ft from the ground, do the goalposts satisfy the NFL rules?
According to National Football League (NFL) rules, all crossbars on goalposts must be 10 ft from the ground. However, teams are allowed some freedom on how high the vertical posts on each end may extend, as long as they measure at least 30 ft . A measurement on an NFL field taken 100 yd from the goalposts yields an angle of 7.8 ° from the ground to the top of the posts. If the crossbar is 10 ft from the ground, do the goalposts satisfy the NFL rules?
According to National Football League (NFL) rules, all crossbars on goalposts must be
10
ft
from the ground. However, teams are allowed some freedom on how high the vertical posts on each end may extend, as long as they measure at least
30
ft
. A measurement on an NFL field taken
100
yd
from the goalposts yields an angle of
7.8
°
from the ground to the top of the posts. If the crossbar is
10
ft
from the ground, do the goalposts satisfy the NFL rules?
4. Use method of separation of variable to solve the following wave equation
მłu
J²u
subject to
u(0,t) =0, for t> 0,
u(л,t) = 0, for t> 0,
=
t> 0,
at²
ax²'
u(x, 0) = 0,
0.01 x,
ut(x, 0) =
Π
0.01 (π-x),
0
Solve the following heat equation by method of separation variables:
ди
=
at
subject to
u(0,t) =0, for
-16024
ძx2 •
t>0, 0 0,
ux (4,t) = 0, for
t> 0,
u(x, 0) =
(x-3,
\-1,
0 < x ≤2
2≤ x ≤ 4.
ex
5.
important aspects.
Graph f(x)=lnx. Be sure to make your graph big enough to easily read (use the space given.) Label all
6
33
College Algebra with Modeling & Visualization (5th Edition)
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