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Re: Did I do my math right?

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SDuke524 is not online. SDuke524
Joined: 29 Jul 2008
Total Posts: 6267
12 Sep 2011 08:47 PM
local slope="2/5";
local point=Vector3.new(2,3);

--seperating the slope
local deno=tonumber(slope:sub(slope:find("/")+1));
local numo=tonumber(slope:sub(1,slope:find("/")-1));
local deci_slope=loadstring("return " .. slope)();
if numo and deno and deci_slope then
--point-slope
local ps=(point.y>0 and "y-" .. point.y or point.y<0 and "y+" .. (-1*point.y) or "y") .. "=" .. slope .. "(x" .. (point.x>0 and "-" .. point.x or point.x<0 and "+" .. (-1*point.x) or "") .. ")";
--slope-intercept
local b=point.y-(point.x*deci_slope);
local si="y=" .. slope .. "x" .. (b>0 and "+" .. b or b<0 and "-" .. (-1*b) or "");
--standard form
local x,y,c;
if (deci_slope*point.x)%1==0 and deci_slope%1==0 then
x=deci_slope .. "x";
y="y";
c=point.y+(point.x*deci_slope);
else
x=(deci_slope*deno) .. "x";
y=deno .. "y";
c=(point.y*deno)+(point.x*deci_slope*deno);
end
local standard=x .. "+" .. y .. "=" .. c;
print(ps);
print(si);
print(standard);
end


All it should do is take the slope and a point then put it in point-slope, slope-intercept and standard form ( being that that's the stupid algebra II homework I got today :/ )

But I'd like it if someone could double check my math ( mostly on the standard form one )
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ArceusInator is not online. ArceusInator
Joined: 10 Oct 2009
Total Posts: 30553
12 Sep 2011 08:52 PM
Is it working

Yes? kthx

No? Fix it

problem = solved
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SDuke524 is not online. SDuke524
Joined: 29 Jul 2008
Total Posts: 6267
12 Sep 2011 08:53 PM
Yes it's running, I'm wanting to know if I did my math right so it isn't giving me the wrong results.
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ThisIsSPORE is not online. ThisIsSPORE
Joined: 24 Jun 2011
Total Posts: 2402
12 Sep 2011 08:57 PM
lolwut i would read it but that's a lot of code and i'm currently tr0lling *still doesn't know what "slope" is :(*
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NXTBoy is not online. NXTBoy
Joined: 25 Aug 2008
Total Posts: 4533
13 Sep 2011 02:03 AM
You realise that `deci_slope*deno == numo`, since `deci_slope == numo / deno`, right?
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sdfgw is not online. sdfgw
Top 50 Poster
Joined: 08 Jan 2009
Total Posts: 41681
13 Sep 2011 08:02 AM
the standard one seems way off. Also, I've never heard of it before. I guess that's an American thing?
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pighead10 is not online. pighead10
Joined: 03 May 2009
Total Posts: 10341
13 Sep 2011 12:35 PM
what
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SDuke524 is not online. SDuke524
Joined: 29 Jul 2008
Total Posts: 6267
13 Sep 2011 07:41 PM
@NXTboy

Thanks I guess I wasn't paying too much attention.

@sdfgw
Ax+By=C
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sdfgw is not online. sdfgw
Top 50 Poster
Joined: 08 Jan 2009
Total Posts: 41681
14 Sep 2011 10:25 AM
y = mx + c

y - mx = c

..

I'm guessing A, B and C have to be whole.

y = (a/b)x + c
by = ax + bc
by - ax = bc
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pighead10 is not online. pighead10
Joined: 03 May 2009
Total Posts: 10341
14 Sep 2011 12:25 PM
aha we did something about y = mc + c in maths today

but what is weird is it is about gradients which i got right last year
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sdfgw is not online. sdfgw
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Joined: 08 Jan 2009
Total Posts: 41681
14 Sep 2011 12:33 PM
pig, you told me you did the linear equation like a year ago

not progressing fast eh
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Fl0x is not online. Fl0x
Joined: 06 Aug 2010
Total Posts: 5169
14 Sep 2011 12:44 PM
1+1=x
x = 2

We did that todai.
I failed at the exam.
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sdfgw is not online. sdfgw
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Joined: 08 Jan 2009
Total Posts: 41681
14 Sep 2011 12:52 PM
surely you jest
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Popinman32 is not online. Popinman32
Joined: 12 Dec 2010
Total Posts: 743
14 Sep 2011 02:01 PM
I'm stuck in algebra one and I've already learned most of it. :/

STUUPID EXTROVERTS, YOUR SYSTEMS ARE MESSING UP OUR LEARNING.

~+[You already have the source, it's the ASM.]+~
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FrameForumV2 is not online. FrameForumV2
Joined: 13 Aug 2011
Total Posts: 518
14 Sep 2011 02:18 PM
Lol
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pighead10 is not online. pighead10
Joined: 03 May 2009
Total Posts: 10341
17 Sep 2011 04:27 AM
@sdfgw

what

no i taught myself the linear equation a year ago

we got taught it this week
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sdfgw is not online. sdfgw
Top 50 Poster
Joined: 08 Jan 2009
Total Posts: 41681
17 Sep 2011 05:16 AM
linear equations are tame bro

polynomials are where it's at
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pighead10 is not online. pighead10
Joined: 03 May 2009
Total Posts: 10341
17 Sep 2011 12:24 PM
i hate/love doing linear equations in maths

love because they're so damn easy that i complete the lesson's work in 10 mins and the teacher has to fnid something else for me to do

hate because everybody else seems to be an idiot and not understand, so we waste most of the lesson practicing it as an entire class. I really still don't get how it's hard in any way tbh
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sdfgw is not online. sdfgw
Top 50 Poster
Joined: 08 Jan 2009
Total Posts: 41681
17 Sep 2011 12:28 PM
you don't get how it's hard because you're used to being smart at maths

you are clearly not used to being used to being smart at maths, whereas I am

I don't like to brag, as I don't know if I'm used to being used to being used to being smart at maths yet

besides you're what year 9

linear equations are year 7 / 8 work even in a lower set
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pighead10 is not online. pighead10
Joined: 03 May 2009
Total Posts: 10341
18 Sep 2011 04:20 AM
this is beginning of year 9 top set

but i seriously can't see why it's hard to understand, seeing as all we were doing is y = mx + c

find gradient = it goes up by 3, goes across 2, so 3/2 = 1.5 = m

it crosses the y at 4 = 4

THERE I DID IT

WHY DOES MY TOP SET NOT GET THIS?!
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sdfgw is not online. sdfgw
Top 50 Poster
Joined: 08 Jan 2009
Total Posts: 41681
18 Sep 2011 11:34 AM
"you don't get how it's hard because you're used to being smart at maths

you are clearly not used to being used to being smart at maths, whereas I am"
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pighead10 is not online. pighead10
Joined: 03 May 2009
Total Posts: 10341
19 Sep 2011 08:58 AM
yes, i am used to being smart at maths, but i usually understand how people understand so i can teach them how to understand the bits i understand how the don't understand

but this i don't

even the guy i sit next to, who is one of the top in our top maths set, kept getting it wrong and i didn't have the slightest clue how he got 0.3 when the answer was 8/-3 or something
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Lightmaster9 is not online. Lightmaster9
Joined: 14 May 2009
Total Posts: 8659
19 Sep 2011 10:11 AM
Cheese. :3
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arundel is not online. arundel
Joined: 21 Apr 2008
Total Posts: 5762
19 Sep 2011 11:34 AM
Y r u usin arithmetic on a stringz0r.. >_>

n,dec=5,3
num=n/dec


...
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Legend26 is not online. Legend26
Joined: 08 Sep 2008
Total Posts: 10586
19 Sep 2011 05:50 PM
Slope? Hard?

wut is this?
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