User manual HP 48GII GRAPHING CALCULATOR

[. . . ] hp 48gII graphing calculator user's guide H Edition 4 HP part number F2226-90020 Notice REGISTER YOUR PRODUCT AT: www. register. hp. com THIS MANUAL AND ANY EXAMPLES CONTAINED HEREIN ARE PROVIDED "AS IS" AND ARE SUBJECT TO CHANGE WITHOUT NOTICE. HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MANUAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. SHALL NOT BE LIABLE FOR ANY ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, PERFORMANCE, OR USE OF THIS MANUAL OR THE EXAMPLES CONTAINED HEREIN. Copyright 2003 Hewlett-Packard Development Company, L. P. Reproduction, adaptation, or translation of this manual is prohibited without prior written permission of Hewlett-Packard Company, except as allowed under the copyright laws. Hewlett-Packard Company 4995 Murphy Canyon Rd, Suite 301 San Diego, CA 92123 Printing History Edition 4 April 2004 Preface You have in your hands a compact symbolic and numerical computer that will facilitate calculation and mathematical analysis of problems in a variety of disciplines, from elementary mathematics to advanced engineering and science subjects. [. . . ] They require use of the cursor and the arrow keys (sTM--~) to move the cursor about the graphics screen. DOT+ and DOTWhen DOT+ is selected, pixels will be activated wherever the cursor moves leaving behind a trace of the cursor position. When DOT- is selected, the opposite effect occurs, i. e. , as you move the cursor, pixels will be deleted. For example, use the TM-- keys to move the cursor somewhere in the middle of the first quadrant of the x-y plane, then press @DOT+Press and hold the s key to see the line you just traced being erased. Press @DOT-, when done, to deselect this option. Page 12-45 MARK This command allows the user to set a mark point which can be used for a number of purposes, such as: Start of line with the LINE or TLINE command Corner for a BOX command Center for a CIRCLE command Using the MARK command by itself simply leaves an x in the location of the mark (Press L@MARK to see it in action). LINE This command is used to draw a line between two points in the graph. To see it in action, position the cursor somewhere in the first quadrant, and press , , @LINE. Use the TM key to move the cursor to the right of the current position, say about 1 cm to the right, and press @LINE. Notice that the cursor at the end of this line is still active indicating that the calculator is ready to plot a line starting at that point. Press ~ to move the cursor downwards, say about another cm, and press @LINE again. Now you should have a straight angle traced by a horizontal and a vertical segments. The cursor returns to its normal shape (a cross) and the LINE function is no longer active. TLINE (Toggle LINE) Move the cursor to the second quadrant to see this function in action. Move the cursor with the arrow keys away from this point, and press @TLINE. A line is drawn from the current cursor position to the reference point selected earlier. Pixels that are on in the line path will be turned off, and vice versa. To deactivate TLINE, move the cursor to the original point where TLINE was activated, and press @LINE @LINE. Page 12-46 BOX This command is used to draw a box in the graph. Move the cursor with the arrow keys to a point away, and in a diagonal direction, from the current cursor position. A rectangle is drawn whose diagonal joins the initial and ending cursor positions. Moving the cursor to another position and pressing @BOX@ will generate a new box containing the initial point. To deselect BOX, move the cursor to the original point where BOX was activated, then press @LINE @LINE. CIRCL This command produces a circle. Mark the center of the circle with a MARK command, then move the cursor to a point that will be part of the periphery of the circle, and press @CIRCL. To deactivate CIRCL, return the cursor to the MARK position and press @LINE. Try this command by moving the cursor to a clear part of the graph, press @MARK. [. . . ] If HP is unable, within a reasonable time, to repair or replace any product to a condition as warranted, you will be entitled to a refund of the purchase price upon prompt return of the product with proof of purchase. HP products may contain remanufactured parts equivalent to new in performance or may have been subject to incidental use. Warranty does not apply to defects resulting from (a) improper or inadequate maintenance or calibration, (b) software, interfacing, parts or supplies not supplied by HP, (c) unauthorized modification or misuse, (d) operation outside of the published environmental specifications for the product, or (e) improper site preparation or maintenance. HP MAKES NO OTHER EXPRESS WARRANTY OR CONDITION WHETHER WRITTEN OR ORAL. [. . . ]