GetThroughDiffEq
New member
- Joined
- Mar 2, 2019
- Messages
- 23
So, I picked up a teacher's wraparound edition: Advanced Mathematical Concepts - Precalculus with Applications, which seems to be much better at explaining things than my old book. That being said, even after reading the chapter's text, I'm lost on the following questions related to domain and range:
''State the domain and range of each relation. Then state whether the relation is a function. Write yes or no.''
22. {(5, 5), (6, 6)}
For the Domain, I got {(5)} and for the range, {(6)}.
The correct answer is {(5, 6)} for the domain and {(5, 6)} for the range.
I was correct that it was a function.
_____________________________________________________________________________________________________________________________________________________________
''The symbol [x] means the greatest integer not greater than x. If f(x) = [x] + 4, find each value.''
37. f(π)
I got 3.14 + 4 = 7.14.
However, the correct answer is supposed to be 7?
Why?
39. f(q+1)
I got q + 5.
The answer is supposed to be [q] + 5.
Is that correct or would it be marked wrong on a test if I didn't include the brackets?
Thanks in advance.
''State the domain and range of each relation. Then state whether the relation is a function. Write yes or no.''
22. {(5, 5), (6, 6)}
For the Domain, I got {(5)} and for the range, {(6)}.
The correct answer is {(5, 6)} for the domain and {(5, 6)} for the range.
I was correct that it was a function.
_____________________________________________________________________________________________________________________________________________________________
''The symbol [x] means the greatest integer not greater than x. If f(x) = [x] + 4, find each value.''
37. f(π)
I got 3.14 + 4 = 7.14.
However, the correct answer is supposed to be 7?
Why?
39. f(q+1)
I got q + 5.
The answer is supposed to be [q] + 5.
Is that correct or would it be marked wrong on a test if I didn't include the brackets?
Thanks in advance.