Matrices I
Matrices II
Sequences
Series
Applications
100
The determinant of the matrix 
What is 29 ?
100
The solution to the system of equations is
What is
(-1,2)
100
The first five terms of
a_n=6n-3
What are 3, 9, 15, 21, 27 ?
100
The sum of the series
\sum_{i=1}^{5}(3i+1)
What is 50 ?
100
The sum of all integers from 51 to 71.
What is 1281 ?
200
The value of Dx for the system 
What is -15 ?
200
The determinant of the matrix 
What is 0 ?
200
The first five terms of the sequence
a_n=(-1)^{n-1}(4n)
What are 4, -8, 12, -16, 20 ?
200
The sum of the series
\sum_{i=1}^{5}1/(i+1)
What is
29/20 ?
200
The number of telephone poles in a stack that has 30 poles in the bottom row, 29 poles in the next row and so on.
What is 465 poles?
300
The value Dy for the system 
What is 11 ?
300
The partial fraction decomposition is
What is
1/(x-2) + 1/(x+1)
300
a_1
for the arithmetic sequence with
a_5=5 and a_8=17
What is -11 ?
300
The sum of the first 10 terms of the arithmetic sequence having
a_1=2 and d=5
What is 245?
300
The total number of ancestors a person has going back 10 generations. (Hint: a person has two parents, four grandparents, eight great-grandparents, etc.)
What is 2046 ancestors ?
400
The determinant of 
What is 16 ?
400
The partial fraction decomposition is
What is
-1/x - 1/x^2 + 1/(x-1)
400
a_3
for the geometric sequence with
a_1=-2 and r=-3
What is
a_3=-18
400
The sum of the terms
5+3+9/5+\cdots+243/625
What is
7448/625 ?
400
The total accumulated salary after 10 years with a starting salary of $30,000 with an annual raise of $2,500.
What is $412,500 ?
500
Using an augmented matrix, the solution of the system 
What is (1, 0, 2) ?
500
Using Cramer's Rule, the solution of the system 
What is (-2, 1) ?
500
a_n
for the geometric sequence with
a_1=-2 and r=-3
What is
a_n=-2(-3)^{n-1} ?
500
The infinite sum of
\sum_{k=1}^{oo} 3(2/3)^k
What is 6?
500
The number of years it takes for your accumulated earnings to reach $492,000 when you started with a $30,000 salary and received a $2000 annual raise.
What is 12 years ?