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3 years ago

Write the first five terms of the sequence defined by the explicit formula an=21-2n^2

Mathematics

2 answers:

Rus_ich [418]3 years ago

8 0

The answer to the squence is either d or a i believe

nikitadnepr [17]3 years ago

4 0

Answer: D. 19, 13, 3, -11, -29

Step-by-step explanation:

The first five terms can be found by taking n= 1,2,3,4,5

The given sequence is :

$a_{n} =21-2n^{2}$

Substituting n = 1,2,3,4,5 we have :

$a_{1} =21-2(1^{2} )=21-2=19.$

$a_{2} =21-2(2^{2} )=21-8=13$

$a_{3} =21-2(3^{2} )=21-18=3$

$a_{4} =21-2(4^{2} )=21-32=-11$

$a_{5} =21-2(5^{2} )=21-50=-29$

The first five terms of the sequence are

D. 19, 13, 3, -11, -29

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First of 3/7 of a week is 3 days because there are 7 days in a week e out of seven so you get it?

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3 years ago

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The program implementation is given below and the output of the sample run is attached.

def gcd(a, b):

#initialize a function named gcd which takes in two parameters

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#checks if a is greater than b

return gcd (b, a)

#if true interchange the Parameters and Recall the function

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return b

elif a == 1:

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