Question 152333
Step 1. Plot y=2x^2. All this is is a parabola that grows twice as fast as y=x^2.
{{{graph( 300, 200, -5, 5, -3, 50, 2x^2 )}}}
Note that from tradition, and out of precision, we would draw such a graph with a dotted line.

Step 2. We want all values of y such that y is larger than 2x^2. Simply, the area inside the parabola should be shaded. All values of y inside the parabola will be greater than 2x^2. For example, when x=0, y=0. But in our shaded area, y is greater than 0!