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redhot12352
03.12.2019 •
Mathematics
Consider the sequence:
5, 7, 11, 19,
write an explicit definition that defines the sequence:
a_n = 2n + 3
a_n = 3n + 2
a_n = 3n^2
a_n = 2^n + 3
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Ответ:
a_n = 2^n + 3
Step-by-step explanation:
The first differences have a geometric progression, so the explicit definition will be an exponential function. (It cannot be modeled by a linear or quadratic function.) The above answer is the only choice that is an exponential function.
__
First differences are ...
(7-5=)2, 4, 8, 16
Ответ:
Step-by-step explanation:
The given sequence = 5, 7, 11, 19, 35,....
Here , it cam be observe that the difference between the terms is not common but can be expressed as power of 2.
We can write the terms of the sequence as
Then , the required explicit definition that defines the sequence will be
Ответ:
Explanation:
If the exponent is negative, then that means we apply the reciprocal. So something like x^(-2) becomes 1/(x^2). A polynomial cannot have a variable in the denominator like this. So we can rule out choices A, B, and D. Choice C is the only thing left. It is a polynomial because the exponent is a positive whole number.