Sequences and functions

Question 1 of 10

The 1st, 2nd and 3rd terms of a GP are k − 2, k and k + 3. Find k.

Question 2 of 10

The 3rd and 7th terms of an AP are 10 and 30. Find the sum of the first 10 terms.

Question 3 of 10

Find the inverse of f(x) = (x − 4)/2.

Question 4 of 10

The nth term of the AP 3, 7, 11, ... is

Question 5 of 10

Insert three arithmetic means between 4 and 20.

Question 6 of 10

The domain of f(x) = 1/(x − 2) excludes

Question 7 of 10

The function f(x) = x² − 4x on the domain x ≥ 2 is

Question 8 of 10

The 6th term of the GP 2, 6, 18, ... is

Question 9 of 10

If f(x) = 3x − 1, find f(f(1)).

Question 10 of 10

What is the domain of f(x) = 1/(x − 3)?