Oil production. Assume that the rate in Problem 83 is found to be R ( t ) = 120 t t 2 + 1 + 3 0 ≤ t ≤ 20 (A) When is the rate of production greatest? (B) How many barrels of oil Q ( t ) will the field produce in the first t years if Q (0) = 0? How many barrels will be produced in the first 5 years? (C) How long (to the nearest tenth of a year) will it take to produce a total of a quarter of a million barrels of oil?
Oil production. Assume that the rate in Problem 83 is found to be R ( t ) = 120 t t 2 + 1 + 3 0 ≤ t ≤ 20 (A) When is the rate of production greatest? (B) How many barrels of oil Q ( t ) will the field produce in the first t years if Q (0) = 0? How many barrels will be produced in the first 5 years? (C) How long (to the nearest tenth of a year) will it take to produce a total of a quarter of a million barrels of oil?
Solution Summary: The author explains how the rate of greatest production is calculated by dividing R(t) with respect to t.
Find the exact values of sin(2u), cos(2u), and tan(2u) given
2
COS u
where д < u < π.
2
(1) Let R be a field of real numbers and X=R³, X is a vector space over R, let
M={(a,b,c)/ a,b,cE R,a+b=3-c}, show that whether M is a hyperplane of X
or not (not by definition).
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(2) Show that every converge sequence in a normed space is Cauchy sequence but
the converse need not to be true.
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(3) Write the definition of continuous map between two normed spaces and write
with prove the equivalent statement to definition.
(4) Let be a subset of a normed space X over a field F, show that A is bounded set iff
for any sequence in A and any sequence in F converge to zero the
sequence converge to zero in F.
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Establish the identity.
1 + cos u
1 - cos u
1 - cos u
1 + cos u
= 4 cot u csc u
Chapter 5 Solutions
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