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2. {-3, 1, 5, 9, ...} What is the explict rule? Give your answer as an equation.

 

3. For #2, what is the 100th term? 4. {-3, -6, -12, -24, ... } What is the explicit rule?

 

4. {-3, -6, -12, -24, ... } What is the explicit rule?

 

5. {5, -15, 45, ... } What is the explicit rule?

 

6. Does 4*4^(n-1) = 4^n ?

 

PLEASE HELP ME ANSWER THESE FAST, THESE ARE REVIEW PROBLEMS FOR A TEST TOMORROW.!!

 Feb 10, 2021
 #1
avatar+116125 
+1

2.   Arithmetic  series

Common  difference, d,  = 4

First term   =  -3

 

Explcit rule

an  =  -3  + 4 ( n -1)     where    an is the  nth term

 

3. 100th term  for number 2  is      -3 + 4(100 - 1)   =   -3   + 4(99)   = 393

 

4.  Geometric

common ratio, r  = -2

First term   = -3

 

Explicit rule

 

an  = -3(2)^(n -1)

 

 

 

5. Geometric....commom ratio   =  -3    first term  = 5

 

Explicit rule

 

an  = 5 (-3)^(n -1) 

 

6.    4* 4^(n -1)   =  4 * 4^n * 4^(-1)   =  4 * 4^n   /  4  =   4^n

 

cool cool cool

 Feb 10, 2021
 #2
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0

thanks a lot bro, and for the last one, it is equal right? i just wanted to make sure

Guest Feb 10, 2021
 #3
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thanks a lot bro, and for the last one, it is equal right? i just wanted to make sure

Guest Feb 10, 2021
 #4
avatar+116125 
0

True....equal...

 

cool cool cool

CPhill  Feb 10, 2021

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