x*sin(y) • Hacker News Board

Re: x*sin(y)

#71

Post by jobigoud » Fri, Apr 17, 2015, 3:28 PM UTC

lindbergh wrote: post #60

chrisBob wrote: post #4

Google has done math in the search for a while. It is also my go to place for unit conversions.

Speaking of which, miles per hour get converted in m/s, which is not very useful

Just tell it the output unit you want.

30 mph in km/h

Re: x*sin(y)

#72

Post by _lce0 » Fri, Apr 17, 2015, 3:33 PM UTC

ramblerman wrote: post #31

contradictioned wrote: post #24

Earlier quoted context omitted.

I guess, we're flooding the maths-render servers.

lol, I think you're overestimating HN traffic just a bit here. Adding a hash solves the double enter https://www.google.com/?#q=x*sin(y)

lol, I think he's underestimating the Google server power a bit there

:)

Re: x*sin(y)

#73

Post by TheHypnotist » Fri, Apr 17, 2015, 3:34 PM UTC

sk2code wrote: post #65

martokus wrote: post #36

This was posted here around Valentines day last year https://www.google.co.uk/search?hl=en&q=5+%2B+%28-sqrt%281-x...

Only works in Chrome.

It, uh, works in IE.

Re: x*sin(y)

#74

Post by _lce0 » Fri, Apr 17, 2015, 3:35 PM UTC

dheera wrote: post #34

HarrietJones wrote: post #15

Pringle: https://www.google.co.uk/?q=(x*x)%2B(y-x)-(y*y)

No. This is a Pringle: https://www.google.co.uk/?q=(x*x)%2B(y-x)-(y*y)#q=((x*x)%2B(...

now we just need to 3d print those

Re: x*sin(y)

#75

Post by jimmaswell » Fri, Apr 17, 2015, 3:35 PM UTC

amelius wrote: post #21

While this is nice, I don't like the idea of one company being the one-stop-shop for all of our knowledge.

Wolfram is what's used for more serious queries of this nature, and probably still will be for a long time

Re: x*sin(y)

#76

Post by mw67 » Fri, Apr 17, 2015, 3:45 PM UTC

BMarkmann wrote: post #56

avinassh wrote: post #19

Search in Google following for Batman: 2 sqrt(-abs(abs(x)-1)*abs(3-abs(x))/((abs(x)-1)*(3-abs(x))))(1+abs(abs(x)-3)/(abs(x)-3))sqrt(1-(x/7)^2)+(5+0.97(abs(x-.5)+abs(x+.5))-3(abs(x-.75)+abs(x+.75)))(1+abs(1-abs(x))/(1-abs(x))),-3sqrt(1-(x/7)^2)sqrt(abs(abs(x)-4)/(abs(x)-4)),abs(x/2)-0.0913722(x^2)-3+sqrt(1-(abs(abs(x)-2)-1)^2),(2.71052+(1.5-.5abs(x))-1.35526sqrt(4-(abs(x)-1)^2))sqrt(abs(abs(x)-1)/(abs(x)-1))+0.9 link…

Wolfram Alpha does a pretty amazing job of taking an existing graphic and turning back into a graph-able equation... eg: http://www.wolframalpha.com/input/?i=graph+looks+like+batman http://www.wolframalpha.com/input/?i=graph+looks+like+bart+s...

How can one come up with the exact equation to match such an exact drawing? i'm impressed. is it just tons of trial and errors?

Re: x*sin(y)

#77

Post by FarhadG » Fri, Apr 17, 2015, 4:05 PM UTC

A great WebGL library giving you this ability: https://news.ycombinator.com/item?id=9395191

Re: x*sin(y)

#78

Post by Too » Fri, Apr 17, 2015, 4:17 PM UTC

mw67 wrote: post #76

BMarkmann wrote: post #56

Earlier quoted context omitted.

Wolfram Alpha does a pretty amazing job of taking an existing graphic and turning back into a graph-able equation... eg: http://www.wolframalpha.com/input/?i=graph+looks+like+batman http://www.wolframalpha.com/input/?i=graph+looks+like+bart+s...

How can one come up with the exact equation to match such an exact drawing? i'm impressed. is it just tons of trial and errors?

Any continuous function can be described as a sum of sinus-functions with different amplitude and frequencies, given that the maximum frequency is limited. Finding these amplitudes can be done quite easily using something called discrete fourier transform. A lot of audio and imaging technology is based on this theory, jpeg compression for example, and almost any audio and signal-processing.

Re: x*sin(y)

#79

Post by wnevets » Fri, Apr 17, 2015, 4:18 PM UTC

according to the EU this is an antitrust violation?

Re: x*sin(y)

#80

Post by serve_yay » Fri, Apr 17, 2015, 4:22 PM UTC

nodata wrote: post #9

The link doesn't work for me (Firefox). I have to hit Enter in the search box for it to work.

Quite disappointing on an iPad as well. Just an empty page with some vague error message.