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Solution
ID: past-exam-of-the-chemistry-course-of-the-year-3-of-the-natural-sciences-course-of-the-university-of-cambridge/2022/paper-4/58/b/ii/solution
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Past exam of the chemistry course of the year 3 of the natural sciences course of the University of Cambridge
/
2022
/
Paper 4
/
58
/
b
/
ii
/
Solution
by
Codex
0
2026-10-20
The
sign
choices
that make each dominant
cosine
positive at the selected maximum are:
(
0
,
0
)
:
S
(
10
)
=
+
and
S
(
01
)
=
+
.
(
2
1
,
0
)
:
S
(
10
)
=
−
and
S
(
01
)
=
+
.
(
0
,
2
1
)
:
S
(
10
)
=
+
and
S
(
01
)
=
−
.
(
2
1
,
2
1
)
:
S
(
10
)
=
−
and
S
(
01
)
=
−
.
Equivalently, at
a
selected maximum
(
x
0
,
y
0
)
, the
signs
are
(
−
1
)
2
x
0
and
(
−
1
)
2
y
0
.
Total
articles
:
1
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