Scratch

poemon1 · 2012-03-25 15:19:22

scimonster wrote:
poemon1 wrote:
LiFaytheGoblin wrote:

why do you do (193- 12)-(193-7) = 5 ?
this would be (a²+b² - a) - (a² + b² - b)
I thought you would calculate it with this phythagoras thing a²+b²=c²? but maybe I understood it wrong, english math is new for me

EDIT: oh, I just saw what scimonsters wrote...
Idk. It's just what I learned in my 6th grade year.
I'm in 8th grade, and learned the Pythagorean theorem straight from Khan Academy.

Well, i'm in the advanced class now, i also know trig.

LiFaytheGoblin · 2012-03-25 15:22:36

I love maths, so at the moment, I'm thinking about studying it later...

rdococ · 2012-03-26 07:50:41

That looks cool! I know a bit of trig, but all that knowledge goes to SIN, COS, ASIN, ACOS, and maybe soon TAN.

Hey, can you figure this equation out? It's a bit complex, through. The answer is not a real number.

Question: What is x?
Equation: squared (x) = -1

trinary · 2012-03-26 13:52:01

^ i, obviously...
Although -i could also be correct...

Interesting.
I learn trig from Khan Academy.
We're not allowed to do so in school. sad

TorbyFork234 · 2012-03-26 14:59:14

trinary wrote:
^ i, obviously...
Although -i could also be correct...

Interesting.
I learn trig from Khan Academy.
We're not allowed to do so in school.

I also learned everything I know about trig from Khan academy. I convinced my teacher to teach sine cosine and tangent in class.
Back on topic with the mathematical equations

Code:

78x+56/y-yx=558+2/9

what is x?
what is y?

samtwheels · 2012-03-26 15:17:06

My friend made an equation, it offended me.

Men = Money * Money
Time = Money, so men = Money^2

Money is the root of all evil, so Money = √evil

Which means that Money^2 = (√evil)^2 = evil

So that:

Men = evil

as i said, i was offended.

poemon1 · 2012-03-26 15:59:22

TorbyFork234 wrote:
trinary wrote:
^ i, obviously...
Although -i could also be correct...

Interesting.
I learn trig from Khan Academy.
We're not allowed to do so in school.
I also learned everything I know about trig from Khan academy. I convinced my teacher to teach sine cosine and tangent in class.
Back on topic with the mathematical equations
Code:
78x+56/y-yx=558+2/9
what is x?
what is y?

I have no clue...what is leg 1 if the hypotenuse is 60 and the leg2 is 30 O_O

sonatina · 2012-03-26 17:47:32

poemon1 wrote:
scimonster wrote:
poemon1 wrote:

Idk. It's just what I learned in my 6th grade year.
I'm in 8th grade, and learned the Pythagorean theorem straight from Khan Academy.
Well, i'm in the advanced class now, i also know trig.

...Good for you?

RedRocker227 · 2012-03-26 18:26:09

What's this Khan Academy thingy everyone's talking about? I feel left out :'(

trinary · 2012-03-26 19:15:37

Khan Academy is a site which lets you learn almost anything.

The-Whiz · 2012-03-26 19:26:37

5=ln((2X)^2.5)

Find x

echs · 2012-03-26 20:30:33

The-Whiz wrote:
5=ln((2X)^2.5)

Find x

Hmm, nice one.
Assuming x is positive, 2.5 log(x) = 3.26713.
Although the real solution figures to x ≈ 3.69453.
This one was a bit tricky.

lukanater · 2012-03-26 21:10:20

Graph the equation y-4.269=56.3(x-1.267)
in you're browser using the | and _ symbols for the axis as well as the * symbol for the data points.

Must be precise.
KTHXBAI

MathMaster101 · 2012-03-26 23:08:40

at first i thought i might be the one to open this type of discussion. weird.

samtwheels · 2012-03-26 23:11:35

I saw a logarithm on this page, and I realized: I forgot to do my math homework. D:

Happypieman · 2012-03-26 23:35:18

poemon1 wrote:
Ok, Here is a fun one:

pick any number and multiply by two. add 5. multiply by 50. if you have had your birth day, add 1762, else add 1761. subtract the total by your 4-digit birth year, and the first number is what you chose, and the last digit(s) are your age!

That's scary. it worked!

veggieman001 · 2012-03-27 00:06:57

poemon1 wrote:
what is leg 1 if the hypotenuse is 60 and the leg2 is 30 O_O

Simple.
900 + x^2 = 3600
3600 - 900 = 2700
√2700 = 6√75
and 6√75 is approximately 51.961525

poemon1 · 2012-04-09 14:23:21

Ok, Sorry I was not on for a while.

Here's my question:

Code:

7
Σ          ( i ²)
i=0

kayybee · 2012-04-09 23:54:01

poemon1 wrote:
Ok, Sorry I was not on for a while.

Here's my question:
Code:
7
Σ          ( i ²)
i=0

There are equation makers, you know?
Here
or for those with Antidote:

TorbyFork234 · 2012-04-10 00:03:28

Code:

x^x*y+3*48=22416

If you are reading this please don't tell anyone or post the answer. x=4 and y=87. and please don't quote.

AtomicBawm3 · 2012-04-10 00:58:28

peomon1: 1+4+9+16+25+36+49=140

TobyFork: y = 22272/x^x
x = log(base x) of (22272/y)
x = log(22272/y)/log(x)
x*log(x) = log(22272/y)
this isn't going anywhere...

peonom1 (earlier): Why this works:

pick any number: x
multiply by 2: 2x
add 5: 2x + 5
multiply by 50: 100x + 250
add 1762/1761: 100x + 2011 OR 100x +2012
subtract birth year (any year say...1971): 100x + your age (2012-1971 = 41 in this case)

provided you're younger than 100, this will work smile . If not...well...it might mess up a bit smile . The key is the 100x because what that really does is add on 2 zeros so that you can put any two digit number, like an age, in those digits.

AtomicBawm3 · 2012-04-10 01:00:24

veggieman001 wrote:
poemon1 wrote:
what is leg 1 if the hypotenuse is 60 and the leg2 is 30 O_O
Simple.
900 + x^2 = 3600
3600 - 900 = 2700
√2700 = 6√75
and 6√75 is approximately 51.961525

Actually, you can simplify that even further because 75 is divisible by 25, so it should actually be 30√3 which does indeed =51.961525 smile

AtomicBawm3 · 2012-04-10 01:06:36

echs wrote:
The-Whiz wrote:
5=ln((2X)^2.5)

Find x
Hmm, nice one.
Assuming x is positive, 2.5 log(x) = 3.26713.
Although the real solution figures to x ≈ 3.69453.
This one was a bit tricky.

The whole process is actually:
5 = ln((2X)^2.5) use law of log powers
5 = 2.5*ln(2X)
2 = ln(2X)
2X = e^2
X = (e^2)/2
X = 3.694528...

This way is a lot easier to read and keeps it theoretical until you've solved completely for x making calculations more accurate smile although it really only makes a difference around the quadrillionth's place smile .

veggieman001 · 2012-04-10 01:20:50

AtomicBawm3 wrote:
veggieman001 wrote:
poemon1 wrote:
what is leg 1 if the hypotenuse is 60 and the leg2 is 30 O_O
Simple.
900 + x^2 = 3600
3600 - 900 = 2700
√2700 = 6√75
and 6√75 is approximately 51.961525
Actually, you can simplify that even further because 75 is divisible by 25, so it should actually be 30√3 which does indeed =51.961525

Oh yeah lol big_smile

poemon1 · 2012-04-18 16:18:48

I walk 10000 steps. How many calories do I lose? How many pounds?

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#26 2012-03-25 15:19:22

Re: mathematical equations

scimonster wrote:

poemon1 wrote:

LiFaytheGoblin wrote:

#27 2012-03-25 15:22:36

Re: mathematical equations

#28 2012-03-26 07:50:41

Re: mathematical equations

#29 2012-03-26 13:52:01

Re: mathematical equations

#30 2012-03-26 14:59:14

Re: mathematical equations

trinary wrote:

Code:

#31 2012-03-26 15:17:06

Re: mathematical equations

#32 2012-03-26 15:59:22

Re: mathematical equations

TorbyFork234 wrote:

trinary wrote:

Code:

#33 2012-03-26 17:47:32

Re: mathematical equations

poemon1 wrote:

scimonster wrote:

poemon1 wrote:

#34 2012-03-26 18:26:09

Re: mathematical equations

#35 2012-03-26 19:15:37

Re: mathematical equations

#36 2012-03-26 19:26:37

Re: mathematical equations

#37 2012-03-26 20:30:33

Re: mathematical equations

The-Whiz wrote:

#38 2012-03-26 21:10:20

Re: mathematical equations

#39 2012-03-26 23:08:40

Re: mathematical equations

#40 2012-03-26 23:11:35

Re: mathematical equations

#41 2012-03-26 23:35:18

Re: mathematical equations

poemon1 wrote:

#42 2012-03-27 00:06:57

Re: mathematical equations

poemon1 wrote:

#43 2012-04-09 14:23:21

Re: mathematical equations

Code:

#44 2012-04-09 23:54:01

Re: mathematical equations

poemon1 wrote:

Code:

#45 2012-04-10 00:03:28

Re: mathematical equations

Code:

#46 2012-04-10 00:58:28

Re: mathematical equations

#47 2012-04-10 01:00:24

Re: mathematical equations

veggieman001 wrote:

poemon1 wrote:

#48 2012-04-10 01:06:36

Re: mathematical equations

echs wrote:

The-Whiz wrote:

#49 2012-04-10 01:20:50

Re: mathematical equations

AtomicBawm3 wrote:

veggieman001 wrote:

poemon1 wrote:

#50 2012-04-18 16:18:48

Re: mathematical equations

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