User manual CASIO FX-570D

[. . . ] 4 kReplay Copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 kCALC Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 kSOLVE Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normal Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] E-6 · To turn engineering symbols on and off, press the F key a number of times until you reach the setup screen shown below. Disp 1 · Press 1. On the engineering symbol setting screen that appears, press the number key ( 1 or 2) that corresponds to the setting you want to use. 1(Eng ON): Engineering symbols on (indicated by "Eng" on the display) 2(Eng OFF): Engineering symbols off (no "Eng" indicator) · The following are the nine symbols that can be used when engineering symbols are turned on. To input this symbol: Perform this key operation: Ak k (kilo) M (Mega) AM G (Giga) Ag T (Tera) At m (milli) Am µ (micro) AN n (nano) An p (pico) Ap f (femto) Af Unit 103 106 109 1012 10­3 10­6 10­9 10­12 10­15 · For displayed values, the calculator selects the engineering symbol that makes the numeric part of the value fall within the range of 1 to 1000. 1(Disp) 1 9 \ 10 = 9 1 0. m 900. When engineering symbols are turned on, even standard (non-engineering) calculation results are displayed using engineering symbols. E-7 AP J 9 1 0. 9 m 900. Complex Number Calculations CMPLX Use the F key to enter the CMPLX Mode when you want to perform calculations that include complex numbers. F 2 · The current angle unit setting (Deg, Rad, Gra) affects CMPLX Mode calculations. · Note that you can use variables A, B, C, and M only in the CMPLX Mode. Variables D, E, F, X, and Y are used by the calculator, which frequently changes their values. · The indicator "RI" in the upper right corner of a calculation result display indicates a complex number result. Press A r to toggle the display between the real part and imaginary part of the result. Since complex numbers are stored in replay memory in the CMPLX Mode, however, more memory than normal is used up. · Example: (2 3i) (4 5i) (Real part 6) (Imaginary part 8 i) 6 8i 2+3i+4+5i= Ar E-8 k Absolute Value and Argument Calculation Supposing the imaginary number expressed by the rectangular form z = a + bi is represented as a point in the Gaussian plane, you can determine the absolute value (r) and argument ( ) of the complex number. F F F 2 Note that you must create one or more matrices before you can perform matrix calculations. · You can have up to three matrices, named A, B, and C, in memory at one time. · The results of matrix calculations are stored automatically into MatAns memory. You can use the matrix in MatAns memory in subsequent matrix calculations. · Matrix calculations can use up to two levels of the matrix stack. Squaring a matrix, cubing a matrix, or inverting a matrix uses one stack level. See "Stacks" in the separate "User's Guide" for more information. k Creating a Matrix To create a matrix, press A j 1(Dim), specify a matrix name (A, B, or C), and then specify the dimensions (number of rows and number of columns) of the matrix. Next, follow the prompts that appear to input values that make up the elements of the matrix. Ma t A 2 3 2 rows and 3 columns You can use the cursor keys to move about the matrix in order to view or edit its elements. E-15 k Editing the Elements of a Matrix Press A j 2(Edit) and then specify the name (A, B, or C) of the matrix you want to edit to display a screen for editing the elements of the matrix. k Matrix Addition, Subtraction, and Multiplication Use the procedures described below to add, subtract, and multiply matrices. 12 · Example: To multiply Matrix A = 4 0 by ­2 5 [] Matrix B = ­1 0 3 2 ­4 1 (Matrix A 3 2) (Element input) 1 (Matrix B 2 3) (Element input) [ ] ([ 3 ­8 5 ­4 0 12 12 ­20 ­1 ]) A j 1(Dim) 1(A) 3 = 2 = =2=4=0=D2=5=t A j 1(Dim) 2(B) 2 = 3 = D1=0=3=2=D4=1=t (MatA MatB) A j 3(Mat) 1(A) A j 3(Mat) 2(B) = · An error occurs if you try to add, subtract matrices whose dimensions are different from each other, or multiply a matrix whose number of columns is different from that of the matrix by which you are multiplying it. k Calculating the Scalar Product of a Matrix Use the procedure shown below to obtain the scalar product (fixed multiple) of a matrix. · Example: Multiply Matrix C = [ 2 ­1 ­5 3 ] by 3. ([ 6 ­3 ­15 9 ]) E-16 (Matrix C 2 2) (Element input) (3 MatC) A j 1 (Dim) 3(C) 2 = 2 = 2=D1=D5=3=t 3 - A j 3(Mat) 3(C) = k Obtaining the Determinant of a Matrix You can use the procedure below to determine the determinant of a square matrix. [. . . ] (Result: (5 3 ­3)) (3-dimensional Vector A) (Element input) (3-dimensional Vector B) (Element input) (VctA + VctB) A z 1(Dim) 1(A) 3 = 1=D2=3=t A z 1(Dim) 2(B) 3 = 4=5=D6=t A z 3(Vct) 1(A) + A z 3(Vct) 2(B) = · An error occurs in the above procedure if you specify vectors of different dimensions. k Calculating the Scalar Product of a Vector Use the procedure shown below to obtain the scalar product (fixed multiple) of a vector. (Result: (­39 45)) (2-dimensional Vector C) (Element input) (5 VctC) A z 1(Dim) 3(C) 2 = D7l8=9=t 5 - A z 3(Vct) 3(C) = k Calculating the Inner Product of Two Vectors Use the procedure described below to obtain the inner product ( ) for two vectors. · Example: To calculate the inner product of Vector A and Vector B (Result: ­ 24 ) (VctA VctB) A z 3(Vct) 1(A) A z r 1(Dot) A z 3(Vct) 2(B) = · An error occurs in the above procedure if you specify vectors of different dimensions. E-20 k Calculating the Outer Product of Two Vectors Use the procedure described below to obtain the outer product for two vectors. · Example: To calculate the outer product of Vector A and Vector B (Result: (­3, 18, 13)) (VctA VctB) A z 3(Vct) 1(A) A z 3(Vct) 2(B) = · An error occurs in the above procedure if you specify vectors of different dimensions. k Determining the Absolute Value of a Vector Use the procedure shown below to obtain the absolute value (size) of a vector. [. . . ]