5-55u To calculate the root of a graph1. Draw a graph.2. Press !5(G-SOLVE)1(ROOT).3. If there are multiple graphs on the graph screen, one of them will start flashing. Use f andc to move the flashing to the graph you want to analyze.4. To select the flashing graph, press w. This displays the value produced by the analysis.Example Graph the function shown below, and then calculate the roots.Y1 = x3 − 4x• When an analysis produces multiple values, press e to calculate the next value. Pressingd returns to the previous value.• When “On” is selected for the Derivative setting on the Setup screen, the derivative willbe displayed along with the root when you calculate the root of a graph using the aboveprocedure.u To calculate the point of intersection of two graphs1. Draw the graphs.2. Press !5(G-SOLVE)5(INTSECT). If there are three or more graphs on the graphscreen, one of them will start flashing.3. Use f and c to move the flashing to one of the graphs whose point of intersection youwant to determine and then press w.4. Use f and c to move the flashing to the other graph whose point of intersection youwant to determine and then press w.5. Press w to determine the point of intersection for the two graphs.When an analysis produces multiple values, press e to calculate the next value.Pressing d returns to the previous value.
