可文本编辑, 保存运算过程, 可计算复数, 统计及绘图!
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可文本编辑, 保存运算过程, 可计算复数, 统计及绘图!

(1)
Price
¥18.00
Category
Utilities
Last update
Sep 07, 2021
Publisher
View in store
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Ratings & Reviews performance

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Number of reviews,
total
1
Avg rating,
total
⭐3.0
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Description

3686 chars

输入长长的计算式时,修改非常方便 ! 就像是在记事本中写算数题一样 可以计算复数、科学计算、函数作图、统计计算、积分计算 ! • It Supports the File Management ! 该计算器支持完整的文件管理系统 ! - Create a file 创建 - Save 保存 - Open 打开 - Delete 删除 • Mathematical Functions: 数学函数 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: 统计函数 SUM(a1,a2,a3,a4) : a1+a2+a3+a4 求和 AVERAGE(a1,a2,a3,a4) : (a1+a2+a3+a4)÷4 求平均数 VARIANCE(a1,a2,a3,a4) : variance 方差 SD(...) : standard deviation 标准差 SUMSQ(...) : sum of squares 平方和 AD(...) : absolute deviation 绝对方差 CV(...) : coefficient of variation 变异系数 SVARIANCE(...) : sample variance 样本方差 SSD(...) : sample standard deviation 样本标准差 SCV(...) : sample coefficient of variance 样本变异系数 • Help Manual: 帮助文档 “//” 指注释。被注释的语句不执行。 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: 变量名命名规则: Start with letters, and not involving keywords. 需字母开头。不得包含关键字。 A, A1, B25, HAT (对) PRINT1, COS (错) - The Usage of PRINT: PRINT 关键字的使用方法: 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. 如果数值没有被命名,则默认名为“ RESULT” 16+5*6 Click “Run”, the screen shows: RESULT=46 - Combination & Arrangement: 排列组合 C(n,k) = n!/(k!(n-k)!) 排列 A(n,k) = n!/(n-k)! 组合 - Complex Number 复数 当屏幕中出现“i” 或 “∠”时,系统会自动进入复数计算模式。 e.g. X=3+4i or X=5∠53.1° 只有下面9个函数可用于复数计算 SIN(X), COS(X), TAN(X) COT(X), SINH(X), COSH(X) SQRT(X), ABS(X), CONJUGATE(X) - Integral 积分 INTEGRAL X²,2,4 Default precision is 300 times of calculations. It can be more accurate, e.g. 500 times. 默认精度为300次。如果提高精度,可以修改。 INTEGRAL X²,2,4,500 - Graphics 函数作图 PLOT SIN(X) PLOT X² Default length = 10, width = 10. Specify the lenght = 20, width = 5. Then we have, 如果什么都不写,默认长度为10,宽度为10。可修改如下: PLOT X²,20,5 Default dense is 150 points. It also can be customized, e.g. 200 points. 精度很可调整。 PLOT X²,20,5,200

Screenshots

https://is1-ssl.mzstatic.com/image/thumb/Purple71/v4/c0/57/38/c057387a-9a67-d36e-23ea-1702dbf9cc9d/pr_source.jpg/2048x2732bb.pnghttps://is1-ssl.mzstatic.com/image/thumb/Purple62/v4/5d/26/0c/5d260c6e-5986-ce36-8533-657ae2fc5556/pr_source.jpg/2048x2732bb.pnghttps://is1-ssl.mzstatic.com/image/thumb/Purple71/v4/c0/e6/f5/c0e6f581-76c4-031b-05d3-1d633981dd7f/pr_source.jpg/2048x2732bb.pnghttps://is1-ssl.mzstatic.com/image/thumb/Purple71/v4/41/0a/4c/410a4cad-89c7-4d27-a711-4a16db38b891/pr_source.jpg/2048x2732bb.pnghttps://is4-ssl.mzstatic.com/image/thumb/Purple71/v4/6a/c7/e9/6ac7e9c2-789e-4c22-c53a-9bcc41443f45/pr_source.jpg/2048x2732bb.png
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