A graphing calculator is recommended. Use a graph to find approximate \( x \)-coordinates of the points of intersection of the answer to two decimal places.) \[ y=4 x \sin \left(x^{2}\right), \quad y=4 x^{4}, x \geq 0 \]
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To tackle the problem, first, you would plot both functions on your graphing calculator: \( y=4 x \sin(x^2) \) and \( y=4 x^4 \). Look for the points where the two curves intersect; these points represent solutions to the equation \( 4 x \sin(x^2) = 4 x^4 \). From the graph, identify the approximate \( x \)-coordinates of intersection points and round them to two decimal places. Once you've got your initial graph, zooming in on the intersection points can refine your estimate. Be sure to note that these functions behave differently; \( 4 x^4 \) rises steeply, while \( 4 x \sin(x^2) \) oscillates. This characteristic can lead to multiple intersections, so it's worthwhile to explore the intervals around your first results for any additional intersections as you refine your estimates and ensure you're capturing all potential points!