Casio FX-9860GII-L-IH User Guide - Page 504
Graph the expression using the Graph strip., Use G-SLV to extract the roots on the graph screen.,
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10-1-8 eActivity Overview 6. Graph the expression using the Graph strip. 1. While the "Graph draw" Graph strip you created in step 5 is selected, press w. • This will display a graph screen. 2. Press !6(G↔T) to display the Graph Editor screen. 3. In line Y1, input the function (y = 2x2 + x - 3) you want to graph. 4. Press 6(DRAW) to graph the function. • This will display a graph screen. Since the graph intersects the x-axis at -1.5 and 1, we can conclude that the solution (x = 1) obtained in step 4 is valid. The -1.5 value was not included as a solution because we specified a lower limit of 0. • The graph drawn here is stored in the strip we created in step 5. 5. To return to the eActivity workspace screen, press !a('). 7. Use G-SLV to extract the roots on the graph screen. 1. Select the Graph strip we created in step 5, and then press w. • This will display the graph screen and draw the graph we drew in step 6. 2. Use G-SLV to extract the roots of y = 2x2 + x - 3. !5(G-SLV) 1(ROOT) .. (Extracts first root.) e Extracts next root.) • For details about using G-SLV, see page 5-11-9. 3. To return to the eActivity workspace screen, press !a('). 8. Save the eActivity file. • Press 1(FILE)1(SAVE) to save the file. This will save the file you are editing by replacing the currently stored version (if any). 20050401