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by jwroblewski44
Thu May 08, 2014 5:29 pm
Forum: Discrete Math
Topic: A Path Counting Problem
Replies: 2
Views: 847

Re: A Path Counting Problem

Thank you for the help. I'll try working on a formula that accounts for every option a particular node has and every possible combination. It seems as though you can't just count the number of nodes as assume that each node can make a right or down move because nodes on the far right row obviously c...
by jwroblewski44
Tue May 06, 2014 9:39 pm
Forum: Discrete Math
Topic: A Path Counting Problem
Replies: 2
Views: 847

A Path Counting Problem

I am working on this problem: https://projecteuler.net/problem=15 I have a feeling that I need to be looking at combinatorics, specifically "choosing". I've also looked at Pascal's triangle but I still don't know how I would apply this to the problem. Any help without giving me the answer ...
by jwroblewski44
Mon Dec 30, 2013 9:35 pm
Forum: Advanced Algebra ("pre-calculus")
Topic: Exponential Functions
Replies: 2
Views: 1293

Re: Exponential Functions

Ahhh thank you. I forgot that there is more than one form of symbols for describing domain and range. I was familiar with { x | x > 9 } and totally forgot all other methods, i.e. ( 0 , 9 ).
by jwroblewski44
Mon Dec 30, 2013 12:31 am
Forum: Advanced Algebra ("pre-calculus")
Topic: Exponential Functions
Replies: 2
Views: 1293

Exponential Functions

Hello again. I just started a chapter on Exponential Functions and am working on their graphs. I've come across a statement that has me confused. The statement is: "The exponential function f(x)=a^x ( a>0, a doesn't equal 1 ) has domain R and range ( 0, infinity ). The line y=0 ( the x-axis ) i...
by jwroblewski44
Sun Dec 29, 2013 8:50 pm
Forum: Advanced Algebra ("pre-calculus")
Topic: Understanding Zeros Theorem Proof
Replies: 4
Views: 2332

Re: Understanding Zeros Theorem Proof

Sorry for the large time span between posts. That helped clear it up! Thanks again.
by jwroblewski44
Sat Dec 21, 2013 3:36 pm
Forum: Advanced Algebra ("pre-calculus")
Topic: Understanding Zeros Theorem Proof
Replies: 4
Views: 2332

Re: Understanding Zeros Theorem Proof

So when they say 'c i ' they aren't using i to mean sqrt(-1)? The use of 'i' has really confused me. EDIT: A question I forgot to mention in my OP, how is there a zero, c, that is not c 1 ,c 2 ....c n ? I understand that every polynomial has a value that will result in the polynomial equaling zero. ...
by jwroblewski44
Sat Dec 21, 2013 3:00 am
Forum: Advanced Algebra ("pre-calculus")
Topic: Understanding Zeros Theorem Proof
Replies: 4
Views: 2332

Understanding Zeros Theorem Proof

I am having trouble understanding the proof in my text for the Zeros Theorem. It goes like this: "Proof: Let P be a polynomial of degree n. By the complete factorization theorem P(x) = a(x-c1)(x-c2)(x-cn) //the numbers and letter n and i are subscript Now suppose that c is a zero of P other tha...
by jwroblewski44
Sun Sep 15, 2013 11:39 pm
Forum: Trigonometry
Topic: Trig Functions on the Cartesian Plane
Replies: 2
Views: 1614

Re: Trig Functions on the Cartesian Plane

Thank you!
by jwroblewski44
Sat Sep 14, 2013 12:59 am
Forum: Trigonometry
Topic: Trig Functions on the Cartesian Plane
Replies: 2
Views: 1614

Trig Functions on the Cartesian Plane

Hello all. I am working on finding the trig rations of angles that go through a set of x-and-y coordinates ( x , y ). I was doing pretty well; doing the problems, then confirming my answer with the back of the book answers. Then I got to the point ( -10/3 , 4/3 ). X and Y are obvious as they are giv...
by jwroblewski44
Wed Jul 17, 2013 7:20 pm
Forum: Geometry
Topic: Finding radii for circles inscribed in a triangle
Replies: 3
Views: 2753

Re: Finding radii for circles inscribed in a triangle

That's exactly what I was looking for. It's strange to see them using a theory/postulate(?) to solve the solution that I wasn't taught yet.

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