Suppose we want to check whether our answers for the following is correct:
We can use our GC to check as follows:
Since both expressions give the same values, the answer is correct.
Category: Sequences & Series
How to spot the Cancellation Pattern in Method of Difference
Tips: Write the terms using functions. For bottom rows, write from last row and then write the last 2nd row.
Challenging Method of Difference question 2
Solution
Challenging Method of difference question 1
RVHS Promo 2014 Question 4:
Solution for the Hence portion:
Challenging Sequences and Series problem 3
Challenging Sequences and Series problem 2
Solving interest rate problems using GC
Some interest rate problems can be solved quickly using the GC.
Example 1
Solution
Using TI 84 Plus (OS 2.55)
Example 2 
Solution
Using TI 84 Plus (OS 2.55)
Challenging Sequences and Series problem 1
Solution
In this question, we have used “Completing the square” for the “Method of Difference”. For the second part, if students try to solve the algebraic equation or use the graphic calculator, they would not be able to solve. Instead, they must find the limit of the series for large N.
