yes it is a function because sequence defined as "a function whose domain is set of natural number"
true
A sequence can be thought of a list of numbers written in a definite order:a1, a2, a3, ..., a(n+1), an, ...The number a1 is called the first term, a2 is the second term, and in general an is the nth term.For every positive integer n, there is a corresponding number an, and so a sequence can be defined as a function whose domain is the set of all positive integers. But, we usually write an instead of the function f(n) for the value of the function at the number n.Notation: The sequence {a1, a2, a3, ...} is also denoted by {an}.Some sequences can be defined by giving a formula for the nth term. For example:an = (n)/(n +1) the sequence is {1/2, 2/3, 3/4, 4/5, ..., (n)/(n+1), ...}this sequence can be pictured either by plotting its terms on a number line, or by plotting its graph. Since a sequence is a function whose domain is the set of positive integers, its graph consists of isolated points with coordinates (1, a1), (2, a2), (3, a3), ..., (n, an).Try to plot the graph of this sequence, and you will see that the terms of the sequence an = n/(n+1) are approaching 1 as n becomes large. In this case 1 is the limit for this sequence, and we can write:lim n -->∞ an = 1
Yes, the domain(input) would be all natural numbers (numbers greater or equal to zero). The range (output) would be all real numbers. -- Not only natural numbers would be considered part of this domain, all negative numbers are also reasonable inputs to this function, as any negative number multiplied by itself would produce a positive number..... The output (range) would therefore be all positive real numbers......
formula
yes it is a function because sequence defined as "a function whose domain is set of natural number"
true
sequence
A sequence is a list whose members each have the same relationship to the member that precedes it in the list. For example, in the sequence 2, 3, 5, 9, 17, each number after 2 is one less than double its predecessor. Alternatively, a sequence is simply an infinite list of numbers, or a function with the positive integers as the domain.
An arithmetic sequence.
The question does not contain a sequence but a single large number whose digits are the digits of the sequence, 3n run together. There is only one number, not a sequence, so there is no nth term.
It's technically called an arithmetic sequence
A sequence can be thought of a list of numbers written in a definite order:a1, a2, a3, ..., a(n+1), an, ...The number a1 is called the first term, a2 is the second term, and in general an is the nth term.For every positive integer n, there is a corresponding number an, and so a sequence can be defined as a function whose domain is the set of all positive integers. But, we usually write an instead of the function f(n) for the value of the function at the number n.Notation: The sequence {a1, a2, a3, ...} is also denoted by {an}.Some sequences can be defined by giving a formula for the nth term. For example:an = (n)/(n +1) the sequence is {1/2, 2/3, 3/4, 4/5, ..., (n)/(n+1), ...}this sequence can be pictured either by plotting its terms on a number line, or by plotting its graph. Since a sequence is a function whose domain is the set of positive integers, its graph consists of isolated points with coordinates (1, a1), (2, a2), (3, a3), ..., (n, an).Try to plot the graph of this sequence, and you will see that the terms of the sequence an = n/(n+1) are approaching 1 as n becomes large. In this case 1 is the limit for this sequence, and we can write:lim n -->∞ an = 1
Yes, the domain(input) would be all natural numbers (numbers greater or equal to zero). The range (output) would be all real numbers. -- Not only natural numbers would be considered part of this domain, all negative numbers are also reasonable inputs to this function, as any negative number multiplied by itself would produce a positive number..... The output (range) would therefore be all positive real numbers......
No, such a sequence is not posible.
The sum of the terms in a sequence is called a series. Sequence is a function whose domain is the natural numbers. So f(1)= first entry in the sequence, and f(2) is the next.... f(n) is the nth term. We usually don't write sequences that way. Instead of f(1) we write, a1 to refer to the first term. The function tells us the rule we use to find the terms of the sequence. So for example, f says take n and square it. Then the first 3 terms of the sequence are 1, 4 and 9 and the first 3 terms of the series are 1, 5 and 14
Not necessarily. There are series over all kinds of subsets and supersets of the set of real numbers.