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HW4-3b

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(b)
y
"
4g 't 4g
t
"
'
y +4g +4g
y
"
e-
=
,
gcx)
=
-
y
=
In ✗
'
r -140+4=0
→
-2 e-
=
↳
e-
"
=/
✗
zézx
✗
yµ=
→
e-
,
↳
+ ✗
zrxé
"
e-
e-
2x
-
↳
zxézx
/
=
e-
"✗
-2✗t2✗e=
e-
"✗
thx
Éx21n✗
=
-
ftzid '¥dx
+
f×en×_
=
.
dx
-1-2×2 lnxttyx
=
fxlnxdx
-
s=k×
,
dt=✗d✗
ds=¥d✗
+ c
=
lnx
w
-
X
+
-
f
*
Uzyz
¥d✗
y
:
=
✗ > 0
:
y
=
C,
e-
Flux
=
f- {
-
↳
✗
Zlnx
É X'e-
+
-
↳
✗
'z✗2
=
di
✗
tcz
+1-4×2 + c.) elnx
+
*
+
(✗ lnx
÷, He-2×+4 e-
-2×+1-2×2e-
czxe
=
,
e-Y.GE?MH-dx=feT#I-i--dx--flnxdx,anezaxdw--
Int
1-
-
N
MY ,
for
,
-2
=
↳
=
i.
r
e- 2×-2×-2-1
yj=
-
0
✗ >
,
f×éY¥"1n _d✗
-
=
/
=
⇐
yi
→
e-
=
=
Uz
-
"
WH " " "
,
O
-
→
✗ e-
yz=
u
e-
=
"
lnx
-
"
-
✗ 1-
+
3-4×2e-
⇐
G)
✗ e-
↳
-2×1 nx
✗ Ze
-
✗E-
*
+
czié
"
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