# simple

1. ### Adding a fraction to a whole number in an algebraic equation

Hello! :) I am going over another answer for a question on an online test: The only question I have is, how did they get 9/2? The way I'd go about solving this is making the -4 a -4/1, and then adding -1/2 to get 4/2. Where am I going wrong? Thanks in advanced! :) -Neo
2. ### simple computation problem?

Another question from sosmath.com: f(x) = x^2 - 2x +3; find [f(a-b) - f(a)]/b And the answer given is 2a + b -2. I keep getting b - 2a + 2. I get it like this: ( (a-b)^2 -2(a-b) + 3 - [a^2 -2a + 3] ) / b ... ( a^2 -2ab +b^2 -2a + 2b + 3 - [a^2 -2a +3] ) / b ( a^2 -2ab +b^2 -2a + 2b +...
3. ### Simple question about set members

I am reading the intro chapter of "Basic Set Theory" by Levy. This is a question relating to Russel's antimony: \neg \exists y \forall x(x \in y \leftrightarrow x \notin x) , where x and y are sets. (They aren't classes since the chapter hasn't covered that yet.) I am confused a bit how any...
4. ### A simple question: can a linear transformation have the same matrix in different base

Hi: can a linear transformation have the same matrix in different bases? I have spent a whole evening trying to figure out whether this can be to no use. What is certain is that given a base, I can define a linear ttransformation by giving it's values over a base. That is, there exists a...
5. ### Very simple Combination problem

I don't know why I am wrong, help will be really appreciated! A bushwalking club has 80 members, 50 men and 30 women. A committee consisting of two men and one woman is to be selected. How many different committees are possible? I did 50C2 * 30C1 =36000 However, that was wrong. Sent from my...
6. ### Solve the differential equation by integration

having some difficulty with this question help me please guys Solve the differential equation by integration: y' = y Solution is y = c ex but I dont understand it?
7. ### Very simple problem

Hi Can some kind person help me out. I have some equations: t(n+1)=3t(n-1) + 4 and t(n)=3^(n)-2. I am to prove that t(n+1)=3^(n)-2. So I put: t(n+1)=3t(n) + 4 t(n+1)=3((3^(n)-2) + 4 Can somebody help me from here. I am not good at algebra and think I might be making a mistake in that...
8. ### Help with Matrices and Computer Graphics [Simple]

Hi everyone! I'm writing a small 6–12 page assessment for my Grade 11 work (Math IA for the Diploma Programme) and I have chosen to write about an application of Matrices and how they can be used to translate, rotate, and scale different objects when working with computer graphics! I've found...
9. ### Simple percentages help

I need to get total percentage complete of a level in my game given the end position and the players current position. I store the players starting position minus the end position in a variable once in the beginning into variable _totalDistance. and then once every frame the game is rendered...
10. ### Modular proof simple quick help

If x ≅ y (mod n) and q ≅ z (mod n); then (x +q) ≅ (y + z) (mod n):, i know how to prove this, my question is if we wanted to prove it holds for (x + q) ≅ (y + z) (mod 2n): would this be true or false ?, if true how would i show it ? i know it should be simple but im confused.

14. ### Another year 6 simple problem

We need to prove that : 3^33 + 4^33 +5^33 < 6^33 Any idea how to start this one ?
15. ### V. simple Matlab plotting question

Hi, As part of a bigger question I have to create a simple plot in Matlab. Could anyone tell me where I am going wrong in the simple script below: %Test Plot x=-2:0.01:4; D=sqrt(x.^2+(x.^2-2*x-4).^2); Plot(x,D); Kind regards Beetle
16. ### V simple graphing in Matlab Questions

Hi, As part of a bigger question I have to create a simple plot in Matlab. Could anyone tell me where I am going wrong in the simple script below: %Test Plot x=-2:0.01:4; D=sqrt(x.^2+(x.^2-2*x-4).^2); Plot(x,D); Kind regards Beetle
17. ### Probably really simple question about math, and ICEEs.

Hello everyone! This is my first question here. I hope I have used the correct forum group. This is probably really simple, but I just can't get my mind around it. I want to redeem "ICEE points" for ICEE stuff (ICEE stuff is the offical name for the products). I can pay for each item I am...
18. ### simple fractions just cant remember

Hi; Why is (a - b) / (ab) = (b - c) / (bc) the same as (a - b)/(b - c) = ab / bc. Thanks.
19. ### How to write decimals as simple fractions (and other way round.)

Can you just explain 'how to' turn decimals into fractions and fractions into decimals?(Itwasntme)
20. ### super simple stats question, but i'm stuck!! which test do i use?

hello all :) basically i'm just finishing up a research project in which i am measuring whether a 6 week course of massage therapy was able to increase joint angle symmetry (measured at maximal flexion during walk) in 5 participants. i collected data at baseline, then weeks 3 and 6 i have run...