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Factorials: (4n + 1)! / (4n - 1)!  TOPIC_SOLVED

Can someone explain how to do this problem, please?

(4n+1)!/(4n-1)!
by Mere
on Fri Aug 07, 2009 3:04 am
 
Forum: Advanced Algebra ("pre-calculus")
Topic: Factorials: (4n + 1)! / (4n - 1)!
Replies: 4
Views: 5309

Re: Factorials: (4n + 1)! / (4n - 1)!  TOPIC_SOLVED

So then... the denominator would be: 1x2x3x(4n-2)x(4n-1)
And all of that would cancel out with the numerator, leaving (4n)x(4n+1), which is (16(n^2))+4n!

Thank you sooooo much! :clap:
by Mere
on Fri Aug 07, 2009 5:30 pm
 
Forum: Advanced Algebra ("pre-calculus")
Topic: Factorials: (4n + 1)! / (4n - 1)!
Replies: 4
Views: 5309

Re: Factorials: (4n + 1)! / (4n - 1)!  TOPIC_SOLVED

Oh! Okay. Thank you!
by Mere
on Fri Aug 07, 2009 6:01 pm
 
Forum: Advanced Algebra ("pre-calculus")
Topic: Factorials: (4n + 1)! / (4n - 1)!
Replies: 4
Views: 5309

Probability word begins with O, ends with R  TOPIC_SOLVED

Can someone show me how to do this problem? I think that it is conditional probability, but I am unsure how to set up the problem. Thanks... If the letters in the word "POKER" are rearranged, what is the probability that the word will begin with the letter "O" and end with the le...
by Mere
on Sat Aug 08, 2009 12:50 am
 
Forum: Discrete Math
Topic: Probability word begins with O, ends with R
Replies: 3
Views: 3079

Re: Probability word begins with O, ends with R  TOPIC_SOLVED

So...

If you can arrange all of the letters in "POKER" in 120 ways, and
you can arrange letters "PKE" (with O and R on the outside) in 6 ways,
would it be 6/120?
by Mere
on Sat Aug 08, 2009 1:29 am
 
Forum: Discrete Math
Topic: Probability word begins with O, ends with R
Replies: 3
Views: 3079

Probability- Union and Intersection  TOPIC_SOLVED

I need help with an intersection problem. I have listed the values and the question below. If someone could please explain how to do this problem I would be very, very happy!

P(A)= 0.6
P(B)= 0.55
P(A n B)= 0.35

Find: P(A n (not B))
by Mere
on Sat Oct 03, 2009 2:22 am
 
Forum: Discrete Math
Topic: Probability- Union and Intersection
Replies: 1
Views: 1781

Help With Indefinite Integral  TOPIC_SOLVED

I would be very grateful if someone could please give me some help with this problem. If you could give me some pointers to send me in the right direction with the double-exponent on the e that would be wonderful. Thank you!

Find the indefinite integral of (x^4)(e^x^5)dx
by Mere
on Wed Mar 03, 2010 12:12 am
 
Forum: Calculus
Topic: Help With Indefinite Integral
Replies: 1
Views: 1134

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