How can you have fun on Google, Facebook, and Twitter on Valentine’s Day?

Google Valentine’s Day Surprise

Type (or paste) the following algebraic equation into Google search and it plots several different functions on a graph that forms the shape of a heart.

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

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