Ask Experts Questions for FREE Help !
Ask
    geelo's Avatar
    geelo Posts: 3, Reputation: 1
    New Member
     
    #1

    Jan 6, 2010, 02:52 AM
    how do you write the equation for this sequence 3, -6, 12, -24?
    I have an assignment and this is to find the equation of the sequence 3, -6, 12, -24? Please help me! Thanks
    Curlyben's Avatar
    Curlyben Posts: 18,482, Reputation: 1857
    Admin & Wine Expert
     
    #2

    Jan 6, 2010, 02:57 AM
    What do you think the pattern is ?
    geelo's Avatar
    geelo Posts: 3, Reputation: 1
    New Member
     
    #3

    Jan 6, 2010, 03:25 AM
    multiplying the preceding term by -2 to get the next term... but what is the equation?
    Curlyben's Avatar
    Curlyben Posts: 18,482, Reputation: 1857
    Admin & Wine Expert
     
    #4

    Jan 6, 2010, 03:28 AM
    Well you've got it,
    so
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
     
    #5

    Jan 6, 2010, 10:20 AM

    Well, the general way to write the 'general solution of a sequence' of this type (geometric progression) is that way:



    where n is the n th term (for example T1 is first term, T2 second term, etc)
    a is the first term
    r is the common ratio

    Well, you have Equations setting up:




    Those are enough to give the formula:



    Anyway, that's how you do it in higher classes if ever I made a wrong guess on your math level.
    geelo's Avatar
    geelo Posts: 3, Reputation: 1
    New Member
     
    #6

    Jan 14, 2010, 03:39 AM
    Quote Originally Posted by Unknown008 View Post
    Well, the general way to write the 'general solution of a sequence' of this type (geometric progression) is that way:



    where n is the n th term (for example T1 is first term, T2 second term, etc)
    a is the first term
    r is the common ratio

    Well, you have Equations setting up:




    Those are enough to give the formula:



    Anyway, that's how you do it in higher classes if ever I made a wrong guess on your math level.
    thanks you very much for the equation...
    have a nice day!
    god bless! :)
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
     
    #7

    Jan 15, 2010, 12:02 PM

    You're welcome! :)

    God bless too :)

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

How do you write the equation for this sequence 10, 12, 16, 22, 30 [ 3 Answers ]

Hi, How do you write an equation for this sequence whose difference increases by two each time? 10, 12, 16, 22, 30

Write the equation 0f the hyperbola [ 1 Answers ]

from data the average x-intercept of the path along which the sonic boom can be heard is -8 miles and the average focas is -12 miles,describe the hyperbola

How do I write the equation? [ 2 Answers ]

Helen Weller invested $10,000 in an account that pays 10% simple interest. How much additional moneymust be invested in an account that pays 13% simple interest so that the average return on the two investments amounts to 11%? I know the answer is $5,000.00 but I am unsure how to set up the...

Write the balance equation [ 3 Answers ]

Could you please help me to complete this equation , I get the major product but I didn't how to write others.. :confused: 1- Al^3+ + NH4Cl + 3NH4OH... > Al(OH)3 + 2- Ni^2+ + NH4Cl + NH4OH + Na2S... > NiS + 3- Ca^2+ + NH4Cl + NH4OH + (NH4)2CO3... > CaCO3 +

I'm confused on how to write a equation [ 1 Answers ]

The sum of a number, times itself equals 36. Is this an algebraic relationship?


View more questions Search