joeydjky
14.04.2020 •
Mathematics
Translate each of these statements into logical expressions by using quatifiers and predicates with one or two variables. (a) A student in our discrete math class has lived in Florida. (b) There is a student in our discrete math class who got the perfect grade in Midterm I. (c) Everyone in our class loves discrete math. (d) There is a student in our class who has been to every state in the US. (e) There is a student in our class who has been to every city of at least one state in the country.
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Ответ:
a) , b) , c) , d) , e)
Step-by-step explanation:
a) x - A student, M - Set of students of discrete math class, G - has lived in, y - Florida, U - Set of states of the United States of America.
b) x - A student, M - Set of students of discrete math class, y - A perfect grade, H - Midterm I.
c) x - A student, M - Set of students of discrete math class, I - loves discrete math.
d) x - A student, M - Set of students of discrete math class, J - has been in, y - a state, U - Set of states of the United States of America.
e) x - A student, M - Set of students of discrete math class, J - has been in, y - a city, V - At least one state of the United States of America, U - Set of states of the United States of America.
Ответ:
y = - (x - 3)(x + 5)
Step-by-step explanation:
Given the x- intercepts are x = 3 and x = - 5 then the corresponding factors are
(x - 3) and (x + 5)
The equation is the the product of the factors, that is
y = a(x - 3)(x + 5) ← a is a multiplier
To find a substitute (- 1, 8) into the equation
8 = a(- 1 - 3)(- 1 + 5) = a(- 4)(4) = - 16a ( divide both sides by - 16 )
- = a
Then
y = - (x - 3)(x + 5) ← in factored form