Casio fx-9860G User Guide - Page 140
To calculate the focus and length of latus rectum, To calculate the center
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S To calculate the focus and length of latus rectum [G-SLV]-[FOCS]/[LEN] Example To determine the focus and length of latus rectum for the parabola X = (Y - 2)2 + 3 Use the following V-Window settings. Xmin = -1, Xmax = 10, Xscale = 1 Ymin = -5, Ymax = 5, Yscale = 1 K CONICS U @UAUBU(DRAW) (G-SLV) (FOCS) (Calculates the focus.) (G-SLV) (LEN) (Calculates the length of latus rectum.) • When calculating two foci for an ellipse or hyperbolic graph, press C to calculate the second focus. Pressing B returns to the first focus. • When calculating two vertexes for a hyperbolic graph, press C to calculate the second vertex. Pressing B returns to the first vertex. • Pressing C when calculating the vertices of an ellipse will calculate the next value. Pressing B will scroll back through previous values. An ellipse has four vertices. S To calculate the center Example To determine the center for the circle (X + 2)2 + (Y + 1)2 = 22 K CONICS AAAAU AU @UAU(DRAW) (G-SLV) (CNTR) (Calculates the center.) [G-SLV]-[CNTR] 5-34