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Problem
Problem
0
≤
a
≤
3
,
0
≤
b
≤
3
0 \le a \le 3, 0 \le b \le 3
0
≤
a
≤
3
,
0
≤
b
≤
3
and the equation,
x
2
+
4
+
3
cos
(
a
x
+
b
)
=
2
x
x^2 + 4 + 3\cos(ax + b) = 2x
x
2
+
4
+
3
cos
(
a
x
+
b
)
=
2
x
has at least one solution, then find the value of
(
a
+
b
)
(a + b)
(
a
+
b
)
.
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