HP Casio FX-115 Plus Scientific Calculator

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fx-100MS fx-115MS fx-570MS fx-991MS User’s Guide

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Contents Important Information .....................................................2 Sample Operations ..........................................................2 Initializing the Calculator ................................................2 Safety Precautions ..........................................................2 Handling Precautions......................................................2 Removing the Hard Case ................................................3 Turning Power On and Off ..............................................3 Adjusting Display Contrast ............................................3 Reading the Display ........................................................4 Specifying the Calculation Mode ..................................4 Configuring the Calculator Setup ..................................4 Inputting Expressions and Values .................................6 Basic Calculations...........................................................7 Function Calculations ................................................... 11 Complex Number Calculations (CMPLX) ...................15 Using CALC....................................................................16 Using SOLVE..................................................................16 Statistical Calculations (SD, REG) ...............................17 Base-n Calculations (BASE) .........................................20 Equation Calculations (EQN) .......................................22 Matrix Calculations (MAT) (fx-570MS/991MS only) ..........24 Vector Calculations (VCT) (fx-570MS/991MS only) ..........27 Scientific Constants (fx-570MS/991MS only)....................29 Metric Conversion (fx-570MS/991MS only) .......................30 Calculation Ranges, Number of Digits, and Precision .................................................................31 Error Messages..............................................................33 Before Assuming Malfunction of the Calculator... .....34 Replacing the Battery....................................................35 Specifications ................................................................35

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Important Information • The displays and illustrations (such as key markings) shown in this User’s Guide are for illustrative purposes only, and may differ somewhat from the actual items they represent. • The contents of this manual are subject to change without notice. • In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of this product and items that come with it. Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of any kind whatsoever by any other party arising out of the use of this product and the items that come with it. • Be sure to keep all user documentation handy for future reference.

Sample Operations Sample operations in this manual are indicated by a icon. Unless specifically stated, all sample operations assume that the calculator is in its initial default setup. Use the procedure under “Initializing the Calculator” to return the calculator to its initial default setup.

Initializing the Calculator Perform the following procedure when you want to initialize the calculator and return the calculation mode and setup to their initial default settings. Note that this operation also clears all data currently in calculator memory. O!N(CLR)3(All)=

Safety Precautions Battery • Keep batteries out of the reach of small children. • Use only the type of battery specified for this calculator in this manual.

Handling Precautions • Dim figures on the display of the calculator indicate that battery power is low. Continued use of the calculator when the battery is low can result in improper operation. Replace the battery as soon as possible when display