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Mathematics
Mathematics
Problem
Let
A
A
A
denotes the set of values of
x
x
x
for which
x
+
2
x
−
4
≤
0
\frac{x+2}{x-4} \le 0
x
−
4
x
+
2
≤
0
and
B
B
B
denotes the set of values of
x
x
x
for which
x
2
−
a
x
−
4
≤
0
x^2 - ax - 4 \le 0
x
2
−
a
x
−
4
≤
0
. If
B
B
B
is the subset of
A
A
A
, then a
CAN NOT
take the integral value: (a) 0 (b) 1 (c) 2 (d) 3
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