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Problem
Problem
lim
x
→
−
1
sin
2
(
x
3
+
x
2
+
x
−
3
)
1
−
cos
(
x
2
−
4
x
+
3
)
\lim_{x \to -1} \frac{\sin^2 (x^3 + x^2 + x - 3)}{1 - \cos(x^2 - 4x + 3)}
lim
x
→
−
1
1
−
c
o
s
(
x
2
−
4
x
+
3
)
s
i
n
2
(
x
3
+
x
2
+
x
−
3
)
has the value equal to a. 18 b. 9/2 c. 9 d. None of these
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