Casio fx-7400G PLUS Graphing Manuel d'utilisateur Page 1

GraphingA collection of versatile graphing tools plus a large 79 × 47-dotdisplay makes it easy to draw a variety of function graphs quicklyand easil

56Chapter 4 Graphing[1 (Y >) ... Y > f (x) inequality2 (Y <) ... Y < f (x) inequality3 (Y ≥) ... Y > f (x) inequality

57Graphing Chapter 4uuuuuTo graph parametric functionsYou can graph parametric functions that can be expressed in the following format.(X, Y) = (f (T)

58Chapter 4 Graphing Example To graph the inequality y > x2 – 2x – 6Use the following View Window parameters.Xmin = –6 Ymin = –10Xmax = 6 Ymax = 1

59Graphing Chapter 4kkkkk TraceWith trace, you can move a flashing pointer along a graph with the f, c, d, ande cursor keys and obtain readouts of coo

60Chapter 4 Graphing•Pressing d and e moves the pointer along the graph. Holding down eitherkey moves the pointer at high speed.3. Use f and c to mov

61Graphing Chapter 4 Example To graph y = Ax2 – 3, substituting 3, 1, and –1 for the value of AUse the following View Window parameters.Xmin = –5 Ymi

62Chapter 4 Graphingkkkkk ZoomThe zoom feature lets you enlarge and reduce a graph on the display.uuuuuBefore using zoomImmediately after drawing a gr

63Graphing Chapter 42. Press 1 (BOX), and then use the cursor keys (d, e, f, c) to move thepointer to the location of one of the corners of the box yo

64Chapter 4 GraphingUse the following View Window parameters.Xmin = –8 Ymin = –30Xmax = 8 Ymax = 30Xscl = 5 Yscl = 101. After graphing the functions,

65Graphing Chapter 41 2 34[1234[1234[• The above procedure automatically converts the x-range and y-range View Win-dow values to 1/5 of their original

48Chapter 4 Graphing1. Before Trying to Draw a Graphkkkkk Entering the Graph ModeOn the Main Menu, select the GRAPH icon and enter the GRAPH Mode. Whe

66Chapter 4 Graphing[•Other menu items are identical to those in the STAT, GRAPH, TABLE Mode menu.The Sketch function lets you draw lines and plot poi

67Graphing Chapter 4In the RUN or PRGM ModeThe following is the syntax for plotting points in these modes.Plot <x-coordinate>, <y-coordinate&

68Chapter 4 GraphinguuuuuTo turn plot points on and off in the STAT, GRAPH and TABLE Modes• To turn a plot point on1. After drawing a graph, display t

69Graphing Chapter 4uuuuuTo draw a line between two plotted pointsIn the STAT, GRAPH or TABLE Mode Example To draw a line between the two points of i

70Chapter 4 GraphinguuuuuTo draw a line in the STAT, GRAPH and TABLE Modes Example To draw a line between two points of inflection on the graph ofy =

71Graphing Chapter 4In the RUN or PRGM Mode Example To draw a line perpendicular to the x-axis from point (x, y) = (2, 6)on the graph y = 3xUse the f

72Chapter 4 Graphing2. Use the d and e cursor keys to move the line left and right, and press w todraw the line at the current location.e ~ ew•To dra

49Graphing Chapter 42. Input a value for a parameter and press w. The calculator automatically selectsthe next parameter for input.•You can also selec

50Chapter 4 Graphing4. To exit the View Window, press Q.•Pressing w without inputting any value also exits the View Window.• The following is the inpu

51Graphing Chapter 4b. Press ! 3 (V-Window) 2 (TRIG) to initialize the View Window to the follow-ing settings.Deg ModeXmin = –360 Ymin = –1.6Xmax = 36

52Chapter 4 Graphing3. Graph Function OperationsYou can store up to 10 functions in memory. Functions in memory can be edited,recalled, and graphed. T

53Graphing Chapter 4•You will not be able to store the expression in an area that already contains aparametric function. Select another area to store

54Chapter 4 Graphingkkkkk Editing Functions in MemoryuuuuuTo edit a function in memory Example To change the expression in memory area Y1 from y = 2x

55Graphing Chapter 4Use the following View Window parameters.Xmin = –5 Ymin = –5Xmax = 5 Ymax = 5Xscl = 1 Yscl = 1ccc(Select a memory area that contai