IB DP Maths AA SL Functions, Sequences

Question 1

What must be true for a geometric sequence to have a real sum to infinity?

Accepted Answer

|r| < 1

Question 2

Find the solution for the following summation.

Accepted Answer

110

Question 3

Solve for x: 7^x= 70

Accepted Answer

Ln(70)/Ln(7)

Question 4

What's a general representation of an odd number?

Accepted Answer

2N -1, 2N + 1

Question 5

What is the fifteenth term in the sequence 0.75, -1.5, 3, -6, ... ?

Accepted Answer

12,288

Question 6

For which values of x is the graph negative?

Accepted Answer

X < -1 or X > 3

Question 7

What is the constant term in the expansion of (3x - 2)5?

Accepted Answer

-32

Question 8

If f(x) = 3x - 2, what is the inverse of f?

Accepted Answer

(x + 2)/3

Question 9

How can I find nCr?

Accepted Answer

n!/(r!⋅(n-r)!)

Question 10

What is the vertical asymptote of the function, y = (x + 3)/(7 - x)?

Accepted Answer

x = 7

Question 11

What transformations map from the function y = x2 to y = 3(x - 2)2?

Accepted Answer

Translation of 2 to the right, vertical stretch of factor 3.

Question 12

2 consecutive odd numbers

Accepted Answer

15, 17, 2n - 1 , 2n +1

Question 13

2 consecutive odd numbers...

Accepted Answer

2n-1, 2n +1, 15,17

Question 14

How many different groups of 3 students could be chosen from a class of 21?

Accepted Answer

1330

Question 15

What are the solutions of x2 - 13x + 30 = 0

Accepted Answer

x = 10 and x = 3

Question 16

What is the horizontal asymptote of the function, y = (x + 3)/(7 - x)?

Accepted Answer

y = -1

Question 17

What transformations map from the function y = x2 to y = - x2 + 6?

Accepted Answer

Vertical reflection, translation of 6 up.

Question 18

What are the solutions to x2 - x - 20?

Accepted Answer

There are no solutions.

Questions 18