PhotoMath , App which Solves Math Equations using your Smart Phones Camera

[imthewalrus]

Tried this with a 1st order non homogeneous  LDE with constant coefficients and it didnt recognize the primes.

[BarisERY]

Really cool but earyl 2015 realese for android? Thats sad

[The_Evenger]

this is exactly what i need!

and best of all... wait for it...

 

 

IT'S ON WINDOWS PHONE!

[Beskamir]

One of my friends tried this out and it was failing miserably at best it rearranged formulas (at best adding and subtracting X from various sides) something that you should know how to do as soon as you get introduced to variables.

[Ruostunut kokis]

Could become useful. I'm terrible in math, and this could help me understand some formulas more than I currently remember from math classes.

 

Too bad it's on a Windows Phone 8, not Windows 8. Can't try it out on a Windows 8 tablet...  I guess I'll wait for the Android release.

[PortentousLad]

Oh I wish I had my former math teachers email so I could stuff his face in this.

However Mr. White would be ashamed to see this(I'm referring to breaking bad now)

[PhilBoisvert]

Not advanced enough for me like... Really not advanced enough

[Trik'Stari]

I like this idea because I am all for replacing having to know math with technology (I hate math, especially the parts of it that are made up BS that's made up specifically for math classes) but this thing does not work. I downloaded it, tried 4+4 on both my screen and a piece of paper, and it just sits there trying to focus.

 

edit: Lol sorry if this post seems angry, I'm currently in a math class and most of it is over-complicated bullshit that would never actually be used in real life (reducing the equation .0000024 * 6,000,000,000 to scientific notation, why not just actually multiply it with my phone and get the answer of 14,400. That's a much simpler equation for most people who don't actually need scientific notation >.<) for most people

[DeViLzzz]

1+1=69

[Colonel_Gerdauf]

edit: Lol sorry if this post seems angry, I'm currently in a math class and most of it is over-complicated bullshit that would never actually be used in real life (reducing the equation .0000024 * 6,000,000,000 to scientific notation, why not just actually multiply it with my phone and get the answer of 14,400. That's a much simpler equation for most people who don't actually need scientific notation >.<) for most people

 

You cannot always be reliant on external units to do the work for you; sometimes you have to do calculations by hand. Calculators have a margin of error within double-precision floating points, as well as the answer data itself. Doing these calculations by hand, if done properly, removes this margin. Also, doing these calculations manually says a lot more about your understanding of mathematics concepts (this is important in most job placements, whether you like it or not), than just typing "fancy symbols" on a calculator to get an answer that you cannot verify yourself.

 

You also could have brought a better example; 0.0000024 * 6,000,000,000 = 14,400 can be simplified to (2.4 * 10^(-6)) * (6 * 10^9) = (1.44 * 10^4). It may look like "pointless BS" to you, but when you are calculating by paper, it is more simple to reduce-then-calculate than calculating raw numbers as is. These methods are created to save time getting an answer, not to waste it.

[Trik'Stari]

You cannot always be reliant on external units to do the work for you; sometimes you have to do calculations by hand. Calculators have a margin of error within double-precision floating points, as well as the answer data itself. Doing these calculations by hand, if done properly, removes this margin. Also, doing these calculations manually says a lot more about your understanding of mathematics concepts (this is important in most job placements, whether you like it or not), than just typing "fancy symbols" on a calculator to get an answer that you cannot verify yourself.

 

You also could have brought a better example; 0.0000024 * 6,000,000,000 = 14,400 can be simplified to (2.4 * 10^(-6)) * (6 * 10^9) = (1.44 * 10^4). It may look like "pointless BS" to you, but when you are calculating by paper, it is more simple to reduce-then-calculate than calculating raw numbers as is. These methods are created to save time getting an answer, not to waste it.

How is it simpler to convert   0.0000024 * 6,000,000,000 = 14,400 to (2.4 * 10^(-6)) * (6 * 10^9) = (1.44 * 10^4 rather than just typing 0.0000024 * 6,000,000,000 = 14,400 into a calculator? I fail to see how that's simpler. It takes me less than a minute to simply type the original calculation into a calculator, but it takes me several minutes to convert it into scientific notation.

 

 

Edit: For some reason, I cannot get this to be in automatic font color) 

[Colonel_Gerdauf]

How is it simpler to convert   0.0000024 * 6,000,000,000 = 14,400 to (2.4 * 10^(-6)) * (6 * 10^9) = (1.44 * 10^4 rather than just typing 0.0000024 * 6,000,000,000 = 14,400 into a calculator? I fail to see how that's simpler. It takes me less than a minute to simply type the original calculation into a calculator, but it takes me several minutes to convert it into scientific notation.

 

Like I said, there are times and places where calculators are out of the picture, when you want to calculate some values.

 

Anyways, this took me ten seconds:

• 0.0000024 has 5 leading zeros plus a significant digit, so it becomes 2.4 * 10^(-6)
• 6'000'000'000 has 9 trailing zeros with no insignificant digits, so it becomes 6 * 10^9
• so we have both the unit size, and the digit value
• We add 9 to (-6), and we get 3
• we then multiply 2.4 by 6 to get 14.4 (6 * 2 = 12; 6 * 4 = 24; 24 / 10 = 2.4; 12 + 2.4 = 14.4) 
• So we get an answer of 14.4 * 10^3
• which can be simplified to 1.44 * 10^4

 

This may look like a loaded answer, but trust me, it is not as difficult as it looks.

[cubercaleb]

if it can do anything more advanced then algebra 2 i would be surprised

[Trik'Stari]

Like I said, there are times and places where calculators are out of the picture, when you want to calculate some values.

 

Anyways, this took me ten seconds:

• 0.0000024 has 5 leading zeros plus a significant digit, so it becomes 2.4 * 10^(-6)
• 6'000'000'000 has 9 trailing zeros with no insignificant digits, so it becomes 6 * 10^9
• so we have both the unit size, and the digit value
• We add 9 to (-6), and we get 3
• we then multiply 2.4 by 6 to get 14.4 (6 * 2 = 12; 6 * 4 = 24; 24 / 10 = 2.4; 12 + 2.4 = 14.4) 
• So we get an answer of 14.4 * 10^3
• which can be simplified to 1.44 * 10^4

 

This may look like a loaded answer, but trust me, it is not as difficult as it looks.

I get what you are saying, but I can't think of a single situation in my life where it would be easier or faster to do it the way you did it. I readily admit I hate math and am horrible at it. If I need to know the answer to such a problem, there's a 99% chance I will have a calculator.

[T.Vengeance]

I get what you are saying, but I can't think of a single situation in my life where it would be easier or faster to do it the way you did it. I readily admit I hate math and am horrible at it. If I need to know the answer to such a problem, there's a 99% chance I will have a calculator.

That's the basis for scientific notation though. What @Colonel_Gerdauf gave was a convoluted example. But even if you said 0.000000002 * 0.0000052, it's the same as 2E-9 * 5.2E-6. 2*5.2 = 10.4 obviously and you just add the exponents after. So its 10.4 E-15 or 1.04*10^-16. It's really simple.

[Trik'Stari]

That's the basis for scientific notation though. What @Colonel_Gerdauf gave was a convoluted example. But even if you said 0.000000002 * 0.0000052, it's the same as 2E-9 * 5.2E-6. 2*5.2 = 10.4 obviously and you just add the exponents after. So its 10.4 E-15 or 1.04*10^-16. It's really simple.

I still don't see how it's simpler when you first have to convert the numbers into polynomials and then calculate, when you can just do the original equation with a calculator because as said before, if you need to do such a problem, your more than likely going to have a calculator, not to mention you'd probably double check the answer you got by hand with a calculator to ensure accuracy.

[T.Vengeance]

I still don't see how it's simpler when you first have to convert the numbers into polynomials and then calculate, when you can just do the original equation with a calculator because as said before, if you need to do such a problem, your more than likely going to have a calculator, not to mention you'd probably double check the answer you got by hand with a calculator to ensure accuracy.

http://en.wikipedia.org/wiki/Fermi_problem

 

That's the main reason why. It allows you to make quicker judgements on outcomes rather than inputting the actual values into calculators which is actually more time consuming. (Trust me I just had a physics midterm. That shit's intense).

[Colonel_Gerdauf]

I still don't see how it's simpler when you first have to convert the numbers into polynomials and then calculate, when you can just do the original equation with a calculator because as said before, if you need to do such a problem, your more than likely going to have a calculator, not to mention you'd probably double check the answer you got by hand with a calculator to ensure accuracy.

 

Even when you hate a subject, it does not hurt to try the best you can instead of brushing it off as unimportant.

 

I've said this already, calculators are not a crutch item. For example, when you want to evaluate the limit of one number (x) in respect to another (n), calculators are not going to help you. Reliance of a calculator then becomes your personal cobra effect; the attempt to save time in work ends up consuming more time than necessary (or even acceptable). And this is just scratching the surface when it comes to calculus.

 

And let me throw you another example: would you rather calculate 3*4 on a calculator, or on your mind? You would prefer mind, because you have full experience on the technique, and as a result it looks simple to you. This is no different; with enough training, you can train yourself past the challenges of a problem, and it becomes easier and easier over time.

 

For me, calculators are restricted from use, with the exception of trigonometry.

[Trik'Stari]

http://en.wikipedia.org/wiki/Fermi_problem

 

That's the main reason why.

And when would you actually need to use such a thing in the course of your life? I generally use math when I need accuracy, not an approximation. To me, it all just seems like over complicating a simpler way of doing things. to me, .00000.24 * .000000058 is easier and simpler than converting into polynomials or scientific notation. I just don't see how it is advantageous to do so unless you are handling ridiculously large numbers like the distances between galaxies or something

 

Even when you hate a subject, it does not hurt to try the best you can instead of brushing it off as unimportant.

 

I've said this already, calculators are not a crutch item. For example, when you want to evaluate the limit of one number (x) in respect to another (n), calculators are not going to help you. Reliance of a calculator then becomes your personal cobra effect; the attempt to save time in work ends up consuming more time than necessary (or even acceptable). And this is just scratching the surface when it comes to calculus.

 

And let me throw you another example: would you rather calculate 3*4 on a calculator, or on your mind? You would prefer mind, because you have full experience on the technique, and as a result it looks simple to you. This is no different; with enough training, you can train yourself past the challenges of a problem, and it becomes easier and easier over time.

 

For me, calculators are restricted from use, with the exception of trigonometry.

 

I completely understand that, I am making the best effort I can, but I still see it as overcomplicated, that's my issue (not to mention pointless for most things). Some of the math has been quite refreshing, whereas some of it just seems to not make any sense, and be completely worthless (I need context in how I am going to use something, not just numbers on paper with no meaning other than being numbers)

[T.Vengeance]

Even when you hate a subject, it does not hurt to try the best you can instead of brushing it off as unimportant.

 

I've said this already, calculators are not a crutch item. For example, when you want to evaluate the limit of one number (x) in respect to another (n), calculators are not going to help you. Reliance of a calculator then becomes your personal cobra effect; the attempt to save time in work ends up consuming more time than necessary (or even acceptable). And this is just scratching the surface when it comes to calculus.

 

And let me throw you another example: would you rather calculate 3*4 on a calculator, or on your mind? You would prefer mind, because you have full experience on the technique, and as a result it looks simple to you. This is no different; with enough training, you can train yourself past the challenges of a problem, and it becomes easier and easier over time.

 

For me, calculators are restricted from use, with the exception of trigonometry.

 

Oh my god, you just reminded me of my previous lecture with Riemann sums

[Tonylu1595]

It doesn't work that well, it can barely solve pre/algebra problems. Would be better if it could find zero's or solve graphs or automatically draw graphs.

[T.Vengeance]

And when would you actually need to use such a thing in the course of your life? I generally use math when I need accuracy, not an approximation. To me, it all just seems like over complicating a simpler way of doing things. to me, .00000.24 * .000000058 is easier and simpler than converting into polynomials or scientific notation. I just don't see how it is advantageous to do so unless you are handling ridiculously large numbers like the distances between galaxies or something

 

God, no offense but you sound like the kids back in my grade 10 class saying "what's the point of . I'm never going to need to solve quadratics in my life. Just use my graphing calculator for that." If math were to be applied to real life, all you would need is addition, and multiplication. 

[Colonel_Gerdauf]

Oh my god, you just reminded me of my previous lecture with Riemann sums

 

The integration of normal distribution... yep! I studied this in my HS statistics class.

[T.Vengeance]

The integration of normal distribution... yep! I studied this in my HS statistics class.

Nah we're just learning definite integrals in Calculus I right now and so we have to use Riemann sums. For the whole lecture I was like "What the fuck is this :("

[HellaflushMcSwaggins]

FOR ANDROID USERS: the equivalent of this app is called MathHero, free in the Play store

thank me later