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Mathematics
Mathematics
Problem
The least integral value of 'k' for which
(
k
−
1
)
x
2
−
(
k
+
1
)
x
+
(
k
+
1
)
(k-1)x^2 - (k+1)x + (k+1)
(
k
−
1
)
x
2
−
(
k
+
1
)
x
+
(
k
+
1
)
is positive for all real value of
x
x
x
is: (a) 1 (b) 2 (c) 3 (d) 4
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