Recent content by runicle
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Basics of quintic and quadratic expressions
<b>I need a brain refresher</b> to see if i have everything straight in quintic and quadratic expressions. The n's in an expression represents how many turns a line would have The amount of (x+1)^2 means a quadratic curve The if the n is odd there are no complex roots Now here is the...- runicle
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- Basics Expressions Quadratic
- Replies: 1
- Forum: Introductory Physics Homework Help
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Determine Bulb Position for Parabolic Reflector of Headlight
. ...|...B . ...| . ...| . ...| ----|---------D . ...|A . ...| . ...| . ...|...C Remember its a parabola connect the dots. This is what i have done x^2/a^2 - y^2/b^2 = 1 then i substituted a as 0 and b as 16 and it got me nowhere I'm guessing it has to be located at 0 but i...- runicle
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- Art Conics
- Replies: 1
- Forum: Introductory Physics Homework Help
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Factoring and Ellipses: How to Solve for Width?
My work is in the url...- runicle
- Post #2
- Forum: Introductory Physics Homework Help
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Factoring and Ellipses: How to Solve for Width?
I'm trying to put this into factored form help me out and help me with ellipses I don't know what to do... Would i have to place the C that i solved into a^2 = 10^2 + 25.4^2 http://s65.photobucket.com/albums/h237/runicrice/?action=view¤t=scan.jpg- runicle
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- ellipses
- Replies: 2
- Forum: Introductory Physics Homework Help
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Parabola conical whatever equations
I don't see the math in it though... x^2 = 4py x/4^2 = py making x/4^2 = p is it something like that?- runicle
- Post #4
- Forum: Precalculus Mathematics Homework Help
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Parabola conical whatever equations
I forgot the steps on how to do this.- runicle
- Post #2
- Forum: Precalculus Mathematics Homework Help
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Parabola conical whatever equations
I am dazed and confused how does 2x^2=y end up being directrix y=-1/8?- runicle
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- Conical Parabola
- Replies: 4
- Forum: Precalculus Mathematics Homework Help
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Confused with quadrants with Cos Tan Sin
Okay can anyone tell me why is this true for restriction of 0 < x < 360 sin(x)=0.15, x = 8.6 and 171.4 cos(x)=-.655 x = 130 and 230 tan(x)=0.75, x = 36.9 and 216.9 I don't see a pattern or rule... please co-ordinate me through the use of graphs if you can my teacher didn't explain it well.- runicle
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- Confused Cos Sin Tan
- Replies: 5
- Forum: Precalculus Mathematics Homework Help
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How Do You Model Building Sway with Trigonometric Functions?
First off its supposed to be solved using trigonometry and i figured out the question to today. Please note Key words like "guessing".- runicle
- Post #4
- Forum: Introductory Physics Homework Help
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How Do You Model Building Sway with Trigonometric Functions?
this is my question: A Building sways 55cm to the right from origin in 5 seconds and 55 cm to the left of the origin in 35 seconds. And i am supposed to write an eqaution to define this. I'm guessing the is no amplitude no vertical translation and since it's sine basically I am going to...- runicle
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- Cosine Graphs Sine
- Replies: 4
- Forum: Introductory Physics Homework Help
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Imaginary numbers entertwined with quadratics
My davey jones's locker i think I've got It! Correct me if I'm right 0=(x-(2x))(x-(-2x)) 0=(x-2i)(x+2i) 0=(x^2+2ix-2ix-4i) 0=(x^2+4) am i correct? now if the pairs were 1+3i, 1-3i I would have sub the same way like 0=(x-(1+3i))(x-(1-3i)) 0=(x-1+3i)(x+1-3i) and solve from that correct?- runicle
- Post #8
- Forum: Precalculus Mathematics Homework Help
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Imaginary numbers entertwined with quadratics
I doubt that hootenay... I'm thinking of x = -b -+ Square root of b^2-4ac over 2a equation and deriving it so that something will occur... I am confused...- runicle
- Post #6
- Forum: Precalculus Mathematics Homework Help
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Imaginary numbers entertwined with quadratics
Although i don't know what 2i represents... Is it x b c?- runicle
- Post #4
- Forum: Precalculus Mathematics Homework Help
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Imaginary numbers entertwined with quadratics
Im trying this... I just used (a+bi)(c+di) -(a+bi)(c+di)=0 -ac+adi+bci+bdi^2=0 -from previous question 2i, -2i I represented a = 0... and so forth -- runicle
- Post #3
- Forum: Precalculus Mathematics Homework Help
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Imaginary numbers entertwined with quadratics
Hi, I'm not sure if this is calculas based or algebra based so here's the question. ( (A) 2i, -2i For this question i don't know what is being asked so i guess the pairs could be x... I know this: ax^2+bx+c, a(x-h)^2+k and a(x-s)(x-t) So the problem is how can i use the things that i...- runicle
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- Imaginary Imaginary numbers Numbers
- Replies: 9
- Forum: Precalculus Mathematics Homework Help