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Finding a pattern for 2, 3, 7, 16....?  TOPIC_SOLVED

can someone help me figure out a pattern for the above sequence? and i guess i would also need help creating the general term, but any help will be greatly appreciated!

Thanks in advance!
by noobzilla
on Wed Oct 07, 2009 4:32 pm
 
Forum: Discrete Math
Topic: Finding a pattern for 2, 3, 7, 16....?
Replies: 3
Views: 3394

Re: Finding a pattern for 2, 3, 7, 16....?  TOPIC_SOLVED

Thanks a lot!! I just needed to open my mind a bit more to other possibilities. I figured it out and it would like like this 2, 3, 7, 16, 32, 57… Exercise number 1 states to find the next to numbers, and exercise two asks to provide a formula for the nth term of this sequence. Thanks again! Now do y...
by noobzilla
on Wed Oct 07, 2009 4:49 pm
 
Forum: Discrete Math
Topic: Finding a pattern for 2, 3, 7, 16....?
Replies: 3
Views: 3394

Creating a formula for the sequence 7, 10, 14, 19, 25, 32…  TOPIC_SOLVED

is the following expression correct? i mean it's logical to me but i'm not sure if you can do this:

tn = tn-1 + 1 + n

Another way of doing it I think could be by looking into quadratics, but i don't want it to be very complicated.
by noobzilla
on Wed Oct 07, 2009 7:14 pm
 
Forum: Discrete Math
Topic: Creating a formula for the sequence 7, 10, 14, 19, 25, 32…
Replies: 1
Views: 1082

find an expression for the general term of?  TOPIC_SOLVED

find an expression for the general term of these sequences?

C) 144, 121, 100, 81, 64, 49…

F) 2, 3, 7, 16, 32, 57…

I've been trying hard, but i can't seem to find a formula which would work for the nth term.
by noobzilla
on Fri Oct 09, 2009 12:50 am
 
Forum: Discrete Math
Topic: find an expression for the general term of?
Replies: 2
Views: 1808

Re: find an expression for the general term of?  TOPIC_SOLVED

According to yahoo answer, these are possible general terms

ist series numbering from 1^2..is
Tn=T1+(n+1)(n-1)..or Tn=(13-n)^2..goin down the way..
2nd series is
Tn=T1+[(2n-1)(n-1)n]/6..where T1=first term
by noobzilla
on Sat Oct 10, 2009 11:04 pm
 
Forum: Discrete Math
Topic: find an expression for the general term of?
Replies: 2
Views: 1808

Can someone help me figure out a recursive formula for this?  TOPIC_SOLVED

I GIVE UP, seriouosly i've tried so many ways to figure this out but i just can't seem to see the pattern :oops: :oops: :oops: Find the next two numbers in each sequence. A) -1, 1 , 3 , 7 , 15 , ______ , _______ B) 3, 1, 2 , -1 , 3 , -4 , ______, _______ C) 16, 24, 36 , 54 , 81, ______, ______ just ...
by noobzilla
on Thu Oct 15, 2009 10:51 pm
 
Forum: Discrete Math
Topic: Can someone help me figure out a recursive formula for this?
Replies: 2
Views: 2142

Re: Can someone help me figure out a recursive formula for this?  TOPIC_SOLVED

THANK YOU SO MUCHH!! I get it all now, thnx a lot, for the last two i was able to find formulas that work, just like the one you hinted me to see, it works both ways, but i'll use yours cause it's simpler, and the first one, GOD I swear I couldn't see the pattern in it :roll: But Thanks Again, I'm v...
by noobzilla
on Sat Oct 17, 2009 7:36 pm
 
Forum: Discrete Math
Topic: Can someone help me figure out a recursive formula for this?
Replies: 2
Views: 2142

finding the inverse of this function? f (x) = 2/3 (x) - 4  TOPIC_SOLVED

if my functions is f (x) = 2/3 (x) - 4 can't my inverse be: f^i (x) = x + 4 / (2/3) I mean all I'm doing is just reversing the operations but for example in my book for the following functions, they have a different inverse? g (x) = 5/2 (x) - 4 and the answer at the back is: g^i = 2x + 8 / (5) can s...
by noobzilla
on Tue Oct 27, 2009 8:55 pm
 
Forum: Intermediate Algebra
Topic: finding the inverse of this function? f (x) = 2/3 (x) - 4
Replies: 3
Views: 1305

Re:  TOPIC_SOLVED

if my functions is f (x) = 2/3 (x) - 4 Is the above any of the following? . . . . . \mbox{a) }\, f(x)\, =\, \frac{2}{3x\, -\, 4} . . . . . \mbox{b) }\, f(x)\, =\, \frac{2}{3x}\, -\, 4 . . . . . \mbox{c) }\, f(x)\, =\, \frac{2}{3} x\, -\, 4 Or something else? I ap...
by noobzilla
on Tue Oct 27, 2009 10:08 pm
 
Forum: Intermediate Algebra
Topic: finding the inverse of this function? f (x) = 2/3 (x) - 4
Replies: 3
Views: 1305

is it possible to have a negative fraction as a restriction?  TOPIC_SOLVED

When simplyfing rational expressions, after factoring:

Say I have (3x - 8)

can I state that x cannot be -8/3?
by noobzilla
on Mon Nov 02, 2009 8:44 pm
 
Forum: Intermediate Algebra
Topic: is it possible to have a negative fraction as a restriction?
Replies: 3
Views: 997
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