Which function has an inverse that is also a function? Group of answer choices g ( x ) = 2 x − 3 w ( x ) = − 20 k ( x ) = 9 x 2
1 answer:
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Answer:
see explanation
Step-by-step explanation:
A recursive formula allows a term in the sequence to be found by adding a common difference to the previous term
Given the explicit formula
A(n) = - 1 + (n - 1)(- 2)
This is an arithmetic sequence with explicit formula
A(n) = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
For the given explicit formula, then
a₁ = - 1 and d = - 2
The recursive formula is then
=
- 2 ; a₁ = - 1