If 5 x 1 + 4 x 2 ≤ 1 , 000 is one of the problem constraints in a standard maximization problem in standard form with two decision variables, explain why the optimal value of the objective function exists. [Hint: See Theorem 2 in Section 5.3].
If 5 x 1 + 4 x 2 ≤ 1 , 000 is one of the problem constraints in a standard maximization problem in standard form with two decision variables, explain why the optimal value of the objective function exists. [Hint: See Theorem 2 in Section 5.3].
Solution Summary: The author explains that the optimal solution exists for a standard maximization problem with two decision variables subject to constraint 5x_1+4
If
5
x
1
+
4
x
2
≤
1
,
000
is one of the problem constraints in a standard maximization problem in standard form with two decision variables, explain why the optimal value of the objective function exists. [Hint: See Theorem 2 in Section 5.3].
2. Consider the following argument:
(a)
Seabiscuit is a thoroughbred.
Seabiscuit is very fast.
Every very fast racehorse can win the race.
.. Therefore, some thoroughbred racehorse can win the race.
Let us define the following predicates, whose domain is racehorses:
T(x) x is a thoroughbred
F(x) x is very fast
R(x) x can win the race
:
Write the above argument in logical symbols using these predicates.
(b)
Prove the argument using the rules of inference. Do not make use of conditional
proof.
(c)
Rewrite the proof using full sentences, avoiding logical symbols. It does not
need to mention the names of rules of inference, but a fellow CSE 16 student should be
able to understand the logical reasoning.
Find the inverse of the matrix, or determine that the inverse does not exist for:
€
(b)
7
-12
240
1 1 1
(c)
2 3 2
2 17
036
205
20
(d) -1
1
2
1
T NO
1
0
-1
00
1
0
02
(e)
1
0
00
0
0
1
1
4. Prove the following. Use full sentences. Equations in the middle of sentences are fine, but do
not use logical symbols.
(a)
(b)
(n+3)2 is odd for every even integer n.
It is not the case that whenever n is an integer such that 9 | n² then 9 | n.
University Calculus: Early Transcendentals (4th Edition)
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