Categorii: Tot - series - geometric - arithmetic - formula

realizată de John Rodgers 2 ani în urmă

106

Sequences and Series Test

The content focuses on key mathematical concepts related to sequences and series. It covers arithmetic sequences and the methods to calculate sums using both formulas and tricks. Students should understand how to determine specific terms and sums of arithmetic series, like the sum of the first 100 terms or identifying the number of terms based on given conditions.

Sequences and Series Test

Sequences and Series Test

Pascals Triangle

Be able to apply pascals triangle to find a particular term in a binomial expansion

What is the 7th term in the expansion of (2a2-3b)10

Be able to produce pascal's triangle

Geometric Sequences and Series

Geometric Series
Be abe to use the formula to find the sum of a series.

What is S100 for the series 100-50+25-12.5+....

Be able to use the "trick" to sum a geometric series

Cole wants to find S6 for the Gemoetric Series 100-50+25-12.5+6.25-3.125 and his extreme exhaustion reuqires him to use a shortcut, rather than add them all together.

Geometric Sequences
Be able to identify a,r and n from a sequence and apply them

example

what is t10 in the geometric sequence 8,4,2,...

Arithmetic Sequences and Series

arithmetic series
Be able to solve for Sn,a,d or n given three using the formula

The sum of the arithmetic series Sn for the series 4,6,8,.... is 304. How many terms are in the series?

Be able to use the formula to find the sum of an arithmetic series

What is S100 for the series 100,98,96,...

be able to use the "trick" to find the sum of a series

Example: Cole wants to use a shortcut to find the sum of the S100 for the series 4+7+10+...+301 and he is too lazy to add it up. How can Cole find the sum using a special trick (not the formula)

arithmetic sequences
Relate recursive and general terms

Example

What is the recursive definition for the sequence 20,10,0,...

Solve for a,d or n given two of them
Identify a,d and n from a sequence

Examples

What is the general term for the sequence with t10=50 and t20=100?

what is the general term for the arithmetic sequence with 3,7,1,...