다기능 전자계산기 !

긴 수식을 입력 할 때, 매우 쉽게 수정할 수 있습니다 ! 수첩에 문자 쓰듯이 ! 복소수 계산, 통계 계산, 과학 함수 계산,지수 계산, 적분 계산,확률 계산 ! • It Supports the File Management ! 파일 관리를 지원합니다 - Create a file - Save - Open - Delete • Mathematical Functions: 수학 함수 SIN(X) : sine of x COS(X) : cosine of x TAN(X) : tangent of x COT(X) : cotangent of x ASIN(X) : arcsine of x ACOS(X) : arccosine of x ATAN(X) : arctangent of x SINH(X) : hyperbolic sine COSH(X) : hyperbolic cosine TANH(X) : hyperbolic tangent ASINH(X) : inverse hyperbolic sine ACOSH(X) : inverse hyperbolic cosine ATANH(X) : inverse hyperbolic tangent SQRT(X) : square root of x ABS(X) : absolute value of x FCT(X) : x factorial LOG(X,Y) : logarithm of y to base x LN(X) : natural logarithm of x LOG(X) : base-10 logarithm of x LOG10(X) : base-10 logarithm of x LOG2(X) : base-2 logarithm of x EXP(X) : base-e exponential of x ERF(X) : the error function of x ERFC(X) : the complementary error function of x ROUND(X) : integral nearest to x CEIL(X) : the smallest integral that is not less than x FLOOR(X) : the largest integral that is not greater than x TGAMMA(X) : the gamma function of x LGAMMA(X) : the natural logarithm of the absolute value of the gamma function of x X^Y : y-th power of x • Statistical functions: 통계 함수 SUM(a1,a2,a3,a4) : a1+a2+a3+a4 합계 AVERAGE(a1,a2,a3,a4) : (a1+a2+a3+a4)÷4 평균 VARIANCE(a1,a2,a3,a4) : variance 평방 편차 SD(...) : standard deviation 표준 편차 SUMSQ(...) : sum of squares 제곱의 합 AD(...) : absolute deviation 절대 편차 CV(...) : coefficient of variation 변동 계수 SVARIANCE(...) : sample variance 표본 분산 SSD(...) : sample standard deviation 표본 표준 편차 SCV(...) : sample coefficient of variance 표본 분산 계수 • Help Manual: 매뉴얼 “//” means a line comment or annotation. "//"는 주석을 의미합니다. A=2 B=3 C=A+B Click “Run”, the screen shows: C=5 If the line C=A+B is annotated , A=2 B=3 //C=A+B Click “Run”, the screen shows: B=3 - Variable Naming Rules: 변수 이름 지정 규칙 : Start with letters, and not involving keywords. A, A1, B25, HAT (right) PRINT1, COS (wrong) - The Usage of PRINT: PRINT의 사용법 : A=10+5 B=10/5 PRITN A,B Click “Run”, the screen shows: A=15 B=2 Default variable name is RESULT , e.g. 16+5*6 Click “Run”, the screen shows: RESULT=46 - Combination & Arrangement: 조합 및 배열 C(n,k) = n!/(k!(n-k)!) A(n,k) = n!/(n-k)! - Complex Number 복소수 계산 화면에 "i"또는 "∠"이 있으면 복소수 계산 모드로 자동 전환됩니다. e.g. X=3+4i or X=5∠53.1° 9 functions are available for the Mode. 모드에서는 9 가지 기능을 사용할 수 있습니다. SIN(X), COS(X), TAN(X) COT(X), SINH(X), COSH(X) SQRT(X), ABS(X), CONJUGATE(X) - Integral 적분 INTEGRAL X²,2,4 Default precision is 300 times of calculations. It can be more accurate, e.g. 500 times. INTEGRAL X²,2,4,500 - Graphics 그래픽 PLOT SIN(X) PLOT X² Default length = 10, width = 10. Specify the lenght = 20, width = 5. Then we have, PLOT X²,20,5 Default dense is 150 points. It also can be customized, e.g. 200 points. PLOT X²,20,5,200