Sequence - 5 members

Write first five members of the sequence
$a_n ={3n - (-1)^n} +2$

Correct result:

a1 =  6
a2 =  7
a3 =  12
a4 =  13
a5 =  18

Solution:

$a_1=3 \cdot \ 1 - (-1)^{ 1 } +2=6$
$a_2=3 \cdot \ 2 - (-1)^{ 2 } +2=7$
$a_3=3 \cdot \ 3 - (-1)^{ 3 } +2=12$
$a_4=3 \cdot \ 4 - (-1)^{ 4 } +2=13$
$a_5=3 \cdot \ 5 - (-1)^{ 5 } +2=18$

We would be very happy if you find an error in the example, spelling mistakes, or inaccuracies, and please send it to us. We thank you!

Next similar math problems:

• Five members
Write first 5 members geometric sequence and determine whether it is increasing or decreasing: a1 = 3 q = -2
• Tenth member
Calculate the tenth member of geometric sequence when given: a1=1/2 and q=2
• Geometric sequence 4
It is given geometric sequence a3 = 7 and a12 = 3. Calculate s23 (= sum of the first 23 members of the sequence).
• Sequence
Find the common ratio of the sequence -3, -1.5, -0.75, -0.375, -0.1875. Ratio write as decimal number rounded to tenth.
• Six terms
Find the first six terms of the sequence a1 = -3, an = 2 * an-1
• Geometric progression 2
There is geometric sequence with a1=5.7 and quotient q=-2.5. Calculate a17.
• GP - 8 items
Determine the first eight members of a geometric progression if a9=512, q=2
• Common ratio
If 200 units of a commodity are consumed in a first year, and if the annual rate of increase in consumption is 5% (a) what amount is consumed in the 8th year; (b) in the first 15 years?
• Five harvests
In the seed company, they know that, out of 100 grains of a new variety, they get an average of 2000 grains after harvest. Approximately how many grains do they get out of 100 grains after five harvests?
• Terms of GP
What is the 6th term of the GP 9, 81, 729,. .. ?
• Bank
Paul put 10000 in the bank for 6 years. Calculate how much you will have in the bank if he not pick earned interest or change deposit conditions. The annual interest rate is 3.5%, and the tax on interest is 10%.
• Population
What is the population of the city with 3% annual growth, if in 10 years the city will have 60,000 residents?
• Find the 19
Find the 1st term of the GP ___, -6, 18, -54.
• Missing term 2
What is the missing term for the Geometric Progression (GP) 3, 15, 75,__, 1875?