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Mathematics
Mathematics
Problem
Evaluate and simplify
lim
h
→
0
(
x
+
h
)
−
2
−
x
−
2
h
\displaystyle \lim_{h\to 0}\frac{(x+h)^{-2}-x^{-2}}{h}
h
→
0
lim
h
(
x
+
h
)
−
2
−
x
−
2
for
x
≠
0
x\neq 0
x
=
0
.
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