conversion

  1. R

    Conversion % of a positive number to a negative

    I am trying to figure out the conversion % of a positive number to a negative. Here is the example: If i had 1000 dollars more revenue produced this year compared to the same time last year, and made 106,600 dollars more in profit off of it compared to prior year - my conversion % would be...
  2. T

    Angel into centimeter conversion

    Hi! So I believe I have all angels of a triangle including an angel of 90degrees and the hight which is 26.6cm. Is there a way of finding out what the length l in cm is? L would be side a of the triangle and the angel between sides b and c is 7.69 which makes the last angel to be 82.3degrees...
  3. M

    Conversion: Polar form to rectangular form.

    r=2cos(theta) r=2(x/r) r^2=2x x^2+y^2=2x x= rcos(theta) the answer in the book is (x-1)^2+y^2=1
  4. K

    How to convert to first order system?

    Hello! I have to convert this equation into a first order system and then write the discrete equations for that system based on the Euler Method as explicitly as possible. Then I have to apply one step of Euler's method by hand with h=0.1. I think I can do the Euler step by myself, but am...
  5. T

    Am I wrong for this polar conversion?

    Prof just put exam solutions, and I think he is wrong. Basically the question asked to convert a double integral in terms of x and y and to a polar integral (just rewrite it... dont solve it). I had the limits correct, but for the actual function the solutions says it should be...
  6. Jason76

    Conversion from Rectangular to Spherical

    1. 2. 3. Formula:
  7. S

    Constant in Vertex Form Changing Signs After Conversion? (Quadratic Equations)

    I was practicing converting Quadratics from Vertex form, to Standard, and back again when I noticed something odd. After doing a couple, I realized that this might not just be a mistake I was making (then again, it probably is some mistake I'm making). Whenever I'd go from Vertex to Standard...
  8. I

    Isometric graph conversion

    Hey there! I am working on a video game and am using a formula to take an X & Y coordinate, and transfer it into an isometric coordinate. isoX = x-y isoY = (x+y)/2 That is my basic formula to calculate my new isometric coordinate. Now, the 2d objects that use this code are invisible, so all...
  9. H

    Vertex Form Quadratic Written Using Factored Form Variables

    Typically, the conversion of a factored form quadratic into vertex form would be done by expanding and completing the square. However, I have come up with an equation that replaces this method, by allowing conversions to be carried out using only substitution and simplification. This method is...
  10. J

    Badly struggling with this conversion problem, please help???

    In this module we've been discussing fossil fuels and the impacts of their use. One of the impacts is an increase in acid deposition (or acid rain as many people refer to it). An acid can be neutralized by a base (also known as an alkali). Acid deposition can be neutralized by the addition of...
  11. S

    Conversion factors help!

    Hello! I was just studying for chemistry and encountered 'Conversion factors' and have a few questions for that. Hope i'm in the correct thread. Anyway. In the textbook it gives the example of converting from 576 cm -> yards. They go from cm -> in -> ft. -> yd. Is there any reason they went...
  12. A

    Simple conversion problem.

    Hi, I have this problem that I can't figure out. I've had quite a few attempts, but am really not sure where I'm going wrong. It's a simple question, so I'm sure it's something silly I'm doing... Anyway, A flash flood left a 200 hectare property ankle deep (100 mm) in water. How much water...
  13. I

    polar to rect form conversion

    Hi. I'm working on a practice problem which is stumping me. Even after looking up the answer in the back of the book, I still don't understand how it was arrived at. The question involves taking polar equation r = 2(h*cos(t)+k*sin(t)) And coverting it to rectangular form, and verifying that...
  14. J

    Integrals involving Polar Coordinate Conversion

    The following is part of a proof that I am studying from the book Partial Differential Equations by Lawrence Evans. Given that u \in C^{1}(\mathbb{R}^{n})$ with $t \in (0,s) and w \in \partial B(0,1). Consider the integral \int_{0}^{s}\int_{\partial B(0,1)} |Du(x+tw)|dSdt =...
  15. F

    half angle conversion formulas

    sinA+sinB+sinC=4cos1/2Acos1/2Bcos1/2C ..guys can you help me in proving this one..tnx..
  16. G

    Kilograms to litres conversion

    I am having great problems trying to convert kilograms into cubic litres, please can someone help? I would like to know which is the best buy of a particular item (dried mealworms) but get totally confused with kgs and litres! I have no idea how to convert kgs to litres, so please could someone...
  17. C

    Conversion from decimal to hexadecimal

    How do I convert 2,000 from decimal to hexadecimal?
  18. T

    alternative form conversion issue

    Hi, I was wondering can you show me how to convert this form of the equation: (2 (4 n - 3 n^2))/(1 - n)^3 + (4 - 6 n)/(1 - n)^2to this form: (2 (n-2))/(n-1)^3Thank you
  19. B

    Base Conversion Algorithm

    Hello, I am currently reading about base conversion algorithm. The one thing that the author of my textbook has failed to mention is, why does the remainders represent the digits of the number being converted. So, I thought I'd appeal to your minds. Thank you for your time.
  20. F

    2's complement conversion

    Hello, can someone please tell me if I am on the right track with these please. Find the integer value (i.e. negative number) of the binary number using 2's complement: binary / uinsigned integer / 2's compement integer value 0111 1111 1111 1110 / 32766 = 32766 0111 1111 1111...