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Mathematics
Problem
Let
f
f
f
be differentiable at
x
=
4
x=4
x
=
4
with
f
(
4
)
=
6
f(4)=6
f
(
4
)
=
6
and
f
′
(
4
)
=
−
2
f'(4)=-2
f
′
(
4
)
=
−
2
. Determine
lim
x
→
4
f
(
x
)
−
6
x
−
4
\displaystyle \lim_{x\to 4}\frac{f(x)-6}{x-4}
x
→
4
lim
x
−
4
f
(
x
)
−
6
. a)
6
6
6
b)
0
0
0
c)
−
2
-2
−
2
d)
2
2
2
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