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CALC
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Chapter 8
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Lesson 8.1.1
> Problem 8-5
8-5.
Hint (a):
Δ
x
is the width, and
f
(
x
+Δ
xi
) is the height
Hint (b):
as Δ
x
→0,
f
(
a
+Δ
xi
)→__________