Question

Please Help?

Answer 1

do you want the whole steps or just a result?
the final result is an = -7 *6^n

Answer 2

a(n+1) -6 a(n) =0
characteristic equation is x -6 =0
x =6
the equation has the form an= C*6^n
replace a1 = C *6^1 = -42
---->C = -7
replace C into an form to get an= -7 *6^n
Hope this help.
are you in discrete math course?If so, you will understand what i mean

Answer 3

LOL

Answer 4

What's wrong? and what makes you laugh

Answer 5

@ParthKohli : I am a student and want to study from others. Please tell me if I am wrong in my work, I appreciate when you correct my mistake or my flaw

Answer 6

You have left a lot of space. :-)

Answer 7

I don't know why the net post it up. I am not good at computer

Answer 8

I think we can do this using the geometric sequence formula.

Answer 9

yes, you are right. show me your work. now is your turn

Answer 10

Your answer is correct anyway.

Answer 11

\(a_1 = -42\) and \(r = -6\). Now use the following formula:\[a_n = a_1 \times r^{n - 1}\]

Answer 12

how to get r?

Answer 13

Strictly speaking, if you have:\[a_{n + 1} = {\rm some ~number} \times a_n \]For all \(n\), then the "some number" is the common ratio denoted by \(r\).

Answer 14

I'd leave it to the asker to do the rest.

Answer 15

I need help from my problem, may I have yours?

Answer 16

Sure, what may I help you with?

Answer 17

my problem is: find the coefficient of x^10 in the power series of (x^2 +x^4 +....) (x^3 +x^6 +x^9 +....)(x^4 +x^8 +x^12 +....)

Answer 18

This is an interesting problem. Let's see.

Answer 19

You can just message me here; I check this site much often... more than I check my email

Answer 20

dealt. since I have to go. send me message when you've done. Nice to see.

Answer 21

Cya!