Valentine’s day is round the corner and you can be sure that Google has something for this day. Check out this equation. If you key into Google Search, you will see a Heart Graph.
A nice way to impress someone. But don’t try remembering the equation though 
. Here is the equation: -
sqrt(cos(x))*cos(300x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01, sqrt(6-x^2), -sqrt(6-x^2) from -4.5 to 4.5
If you are too lazy to key in this equation, here is the link that will show you the graph
Click Here to Show the Google Heart Graph
(source)
