Suppose that lim x → 3 f ( x ) = 7 . Are the statements in Problems 34–35 true or false? If a statement is true, explain how you know. If a statement is false, give a counterexample. f (2.99) is closer to 7 than f (2.9) is.
Suppose that lim x → 3 f ( x ) = 7 . Are the statements in Problems 34–35 true or false? If a statement is true, explain how you know. If a statement is false, give a counterexample. f (2.99) is closer to 7 than f (2.9) is.
Suppose that
lim
x
→
3
f
(
x
)
=
7
. Are the statements in Problems 34–35 true or false? If a statement is true, explain how you know. If a statement is false, give a counterexample.
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
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