In the following exercises, given that ∫ 0 1 x d x = 1 2 , ∫ 0 1 x 2 d x = 1 3 , and ∫ 0 1 x 3 d x = 1 4 compute the integrals. 99. ∫ 0 1 ( 1 − x + x 2 − x 3 ) d x
In the following exercises, given that ∫ 0 1 x d x = 1 2 , ∫ 0 1 x 2 d x = 1 3 , and ∫ 0 1 x 3 d x = 1 4 compute the integrals. 99. ∫ 0 1 ( 1 − x + x 2 − x 3 ) d x
In the following exercises, given that
∫
0
1
x
d
x
=
1
2
,
∫
0
1
x
2
d
x
=
1
3
, and
∫
0
1
x
3
d
x
=
1
4
compute the integrals.
99.
∫
0
1
(
1
−
x
+
x
2
−
x
3
)
d
x
With differentiation, one of the major concepts of calculus. Integration involves the calculation of an integral, which is useful to find many quantities such as areas, volumes, and displacement.
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Assume that a company is considering purchasing a machine for $50,000 that will have a five-year useful life and a $5,000 salvage value. The
machine will lower operating costs by $17,000 per year. The company's required rate of return is 15%. The net present value of this investment
is closest to:
Click here to view Exhibit 12B-1 and Exhibit 12B-2, to determine the appropriate discount factor(s) using the tables provided.
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Multiple Choice
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7. [10 marks]
Let G
=
(V,E) be a 3-connected graph. We prove that for every x, y, z Є V, there is a
cycle in G on which x, y, and z all lie.
(a) First prove that there are two internally disjoint xy-paths Po and P₁.
(b) If z is on either Po or P₁, then combining Po and P₁ produces a cycle on which
x, y, and z all lie. So assume that z is not on Po and not on P₁. Now prove that
there are three paths Qo, Q1, and Q2 such that:
⚫each Qi starts at z;
• each Qi ends at a vertex w; that is on Po or on P₁, where wo, w₁, and w₂ are
distinct;
the paths Qo, Q1, Q2 are disjoint from each other (except at the start vertex
2) and are disjoint from the paths Po and P₁ (except at the end vertices wo,
W1, and w₂).
(c) Use paths Po, P₁, Qo, Q1, and Q2 to prove that there is a cycle on which x, y, and
z all lie. (To do this, notice that two of the w; must be on the same Pj.)
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