Rules

• Always answer in the form of a question

• Team names & buzzer sounds ready

• Points to be taken away for wrong answers? (Decide as a class…change this slide accordingly for future.)

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500

FormulasArithmeticGeometricor Neither?

Sum ofSeries

SigmaNotation

FindThisTerm

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500

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Formulas - for 100

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tn of an Arithmetic Sequence

Formulas - for 100

tn=t1 + (n-1)d

Formulas - for 200

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tn of a Geometric Sequence

Formulas - for 200

tn = t1 • r (n-1)

Formulas- for 300

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Sum of the first n terms of an Arithmetic

Sequence

Formulas - for 300

Sn = [n(t1 + tn)] / 2

Formulas - for 400

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The Sum of the first n terms of a Geometric

Series

Formulas - for 400

Sn = [t1 (1-rn)] / (1- r)

Formulas - for 500

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Sum of all terms in an Infinite

Geometric Series

Formulas - for 500

S = t1 / (1 – r)

Arithmetic, Geometric, or Neither? - for 100

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1, 5, 25, 125…

Arithmetic, Geometric, or Neither? - for 100

Geometric

Arithmetic, Geometric, or Neither? - for 200

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tn = 4n+3

Arithmetic, Geometric, or Neither? - for 200

Arithmetic

Arithmetic, Geometric, or Neither- for 300

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18, 22, 26, 30…

Arithmetic, Geometric, or Neither? - for 300

Arithmetic

Arithmetic, Geometric, or Neither? - for 400

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tn = log (n+1)

Arithmetic, Geometric, or Neither? - for 400

Neither

Arithmetic, Geometric, or Neither? - for 500

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-3, -1, 1, 3, …

Arithmetic, Geometric, or Neither? - for 500

Arithmetic

Sum of Series - for 100

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Find the sum of the arithmetic series in which…

n=40 t1=-12 and t40=183

Sum of Series - for 100

Sn=3420

Sum of Series - for 200

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50

3 j 2 j1

50

Find the sum of the following

arithmetic series

Sum of Series - for 200

Sn=3925

Sum of Series - for 300

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Find the sum of the geometric series in which…

n=10 r=-3 and t1=2

Sum of Series - for 300

Sn=-29,524

Sum of Series - for 400

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2k1

12

12

1

2k

k

Find the sum of the following geometric

series

Sum of Series - for 400

4095

4096

4095

4096Sn=

Sum of Series - for 500

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3 3 3 3 1 ...

3 3 3 3 1 ...

Find the sum of the following infinite geometric series

Sum of Series - for 500

9

23 1 S=

Sigma Notation- for 100

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Write in expanded form:

6

1

)10(n

n

Sigma Notation- for 100

11+12+13+14+15+16

Sigma Notation- for 200

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8,2

xx

Write in expanded form:

6

1

2n

n

Sigma Notation- for 200

2+4+8+16+32+64

Sigma Notation- for 300

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Write using sigma notation:

-9+3 -1+1/3+….

Sigma Notation- for 300

n

n

3

127

1

Sigma Notation- for 400

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Write using sigma notation:

The series consisting of positive three-digit integers divisible by 5.

Sigma Notation- for 400

199

20

5n

n

Sigma Notation- for 500

Find the value of:

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)1(1

6

1

k

jk

Sigma Notation- for 500

21

Find This Term - for 100

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Find t21 of the following arithmetic

sequence…

4, 9, 14, 19, …

Find This Term - for 100

t21=104

Find This Term - for 200

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t5=24 t9=40

Find t1 of this arithmetic sequence

Find This Term - for 200

t1=8

Find This Term - for 300

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Find t11 of the following sequence

40, -20, 10, -5, …

Find This Term - for 300

5

128t11=

Find This Term - for 400

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Find t5 of the geometric

sequence when t2=18 and t3=12

Find This Term - for 400

t5=

16

3

Find This Term - for 500

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Tell whether the following sequence is arithmetic or geometric, then find

a formula for the nth term

2a + 1, 3a + 3, 4a + 5, …

Find This Term - for 500

Arithmetic

tn = (n + 1) a + (2n - 1)