Question 3
match each question to the right answer.
1. what can you conclude...
Mathematics, 26.01.2020 05:31 noor66
Question 3
match each question to the right answer.
1. what can you conclude is necessary for an "and"
statement (p and q) to be true?
2. what can you conclude is necessary for an “p or q” statement to be true?
3. what can you conclude is necessary for an “if p, then q” statement to be true?
4. what can you conclude is necessary for an “p if and only if q” statement to be true?
a. q is true when p is true.
b. both p and q are true or both p and q are false.
c. both p and q are true.
d. at least one of the truth values of them (p, q) is true.
provide each question with answers! (example: question 1. is b.)
Answers: 1
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Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.
Answers: 3
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What is the multiple zero and multiplicity of f(x) = (x ? 3)(x ? 3)(x + 5)? multiple zero is 3; multiplicity is 2 multiple zero is 5; multiplicity is 1 multiple zero is ? 5; multiplicity is 1 multiple zero is ? 3; multiplicity is 2
Answers: 2
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Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
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Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set.a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}
Answers: 1
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