# division

1. ### I need help justifying a quotient of two trig functions

I know (1-cos2(x/2))1/2/(1-cosx)1/2 Is equal to 1/root2 but I don't know a formal method for justifying this, so I'm asking for someone to show me how to show my teacher that it's a true identity
2. ### Understanding oblique asymptotes

Hi, I hope someone can help. I'm confused about the definition for oblique asymptotes. Do oblique asymptotes only exist when the numerator is exactly one degree larger than the denominator? What do you call something which has a numerator that is more than one degree larger than the...
3. ### Division of Radicals Problem (Stuck)

So here is the problem: \frac{1-(\sqrt{x+1})}{1+(\sqrt{x-1})} Now I had thought that the method to solve it was to just multiply the numerator and denominator by the conjugate of the denominator, but I keep getting answers that are different from the solution provided, which is...
4. ### What's the name when x is at bottom of division

I wanna get this down so I can move on but I'm not sure how to research it because I don't know the name of this. Ex. 4/x=2. I know x=2. What is the name when dividing into x I know I multiply both sides by x to simplify
5. ### Dynamic division - math failure...

I am working on a PC game and am attempting to do some dynamic math to get a players health level for each of X health icons out of a total starting health. Lets say: StartingHealth = 150 PlayerHealth = StartingHealth (Dyanmic, decrements by a number based on enemy strength) HealthIconCount...
6. ### Long Division with Polynomials

Hi everyone! I am VERY confused on how to do long division with polynomials!! Here is an example: 3x^3- 4x^2+ 2x +1, x+2 Any help would be much appreciated! Thank you in advance :) ~EbonyJade :)
7. ### Division of Polynomials

Hi I AM EXTREMELY CONFUSED RIGHT NOW! Could someone please explain simply to me how to do the division of polynomials? I have no previous knowledge of long division using polynomials so could you please explain it to me as simply as possible? x^3+x^2-2x+3, x-1 Thank you SO much!!!!!!!! :)
8. ### Rational Zeroes Theorem and Synthetic Division

Help! Really struggling with these two questions. I have started them, but get stuck. Help would be greatly appreciated. Question 1) A slice 1 unit thickness is removed from one side of a cube. Use the rational zeroes theorem and synthetic division to find the original dimensions of the cube...
9. ### Division - with Division in the Denominator

Would anyone be so kind as to show me how to simplify (reduce) this equation? (Happy)
10. ### Set theoretic examinations of fallacies of division + composition

I am curious to know whether there is a set theoretic proof for the fallacies of division and composition. The former holds when one claims that something true for the whole must also be true of all or some of its parts. The latter holds when one infers that something is true of the whole from...
11. ### Division of Polynomial

Divide: [a^3 + b^3 + c^3 - 3abc]/(a + b + c)
12. ### division of series

hi I am trying to divide \frac{n+5}{3n^4-n} by \frac{1}{n^3} how do I go about it? I don't even know where to begin
13. ### Need help verifying answer to algebraic division problem

A problem asks to divide 3x3 - 20x2 + 39x - 18 by x2 - 6x + 9 The answer given is 3x-2 But I found that answer but with a remainder of -6x Can someone help check my answer?
14. ### Complex Division

Hi All, I'm trying to create a division calculation for the following (numbers are examples - these will change): I have a pot of £30,000. This needs to be divided by 17 people based on their % of yearly target. Here are the example figures I am using: Name Actual % Target Actual...
15. ### Long Division

\dfrac{x^{3} -4x-7}{x^{2} - x - 6}
16. ### synthetic division

Hi, I'm having difficulty with a question. The question poses to "show with synthetic division that all of the real zeros of f(x) = x^3 - 3x^2 - 4x + 5 lie in the interval [-2, 4]" Using the rational zeros theorem, I cannot get 1, -1, 5, or -5 to work as a real zero so I can't use that to...
17. ### inverse of polynomial in division ring

Hello, I'm supposed to find inverse to the polynomial: $x^2+1+(f)$ in $Q[x]/((f),+,*)$ and $f=x^3+5$. I know the solution somehow involves extended Euclidean algorithm, but generally don't know what to do. I tried to find the coefficients for Bezout identity which worked, but don't know how to...
18. ### synthetic division

Hi; In synthetic division why do we change the sign of the divisor? say I have to divide a polynomial by (x - 2) why do I need to use +2?Thanks.
19. ### Division by Zero (In the Future)

Is division by zero ever going to be possible?
20. ### I'd like to improve my layout for algebraic division. It won't even work at all here

Why won't this LaTex work here? It works elsewhere. (Crying) I'd really appreciate any helpful ideas. Thanks in advance. The thumb nail shows what it looks like elsewhere. I really only wanted to improve the look but now it doesn't look like anything. How sad. (Worried)...