介绍
Qalculate! 多功能计算器,一款桌面系统上的一个计算器软件,提供所需要的各种计算器优化项目,提供科学计算器功能,比电脑自带的计算器软件要更加强大,一些科研与学术领域所需要的计算要求也能满足。
软件截图
软件特点
计算与解析:
基本运算和操作符:+ – * / ^ E () && || ! < > >= <= != ~ & | << >>
字符串的容错解析:log5/2.5(3)+(2(3+5 = ln(5)/(2.53)+23+5)
表达式可以包含数字、函数、单位、变量、向量、矩阵及日期的任意组合
支持复数和无穷量(∞)
误差传递
区间算法(用于确定有效数字或直接计算间隔的数)
支持所有常用进制,以及负数、非整数根,六十进制数,时间格式和罗马数字
可以禁用函数、变量、单位或未知数以避免混淆,例如:(a+b)^2 不表示 (are+barn)^2
而是 (“a”+”b”)^2
可控的隐式乘法
支持矩阵、向量以及相关运算(行列式等)
详细错误消息
高精度计算
RPN 模式(逆波兰式计算)
结果显示:
支持所有常用进制,以及负数、非整数根,六十进制数,时间格式和罗马数字
许多自定义选项:精度、小数位数和乘号等
精确(=)或近似(≈)
分式:4/6*2=1.333… = 4/3=1+1/3
符号运算:
例如:(x + y)^2 = x^2 + 2xy + y^2; 4 “apples” + 3 “oranges”
因子分解和简化
微分与积分
能解大多数方程和不等式
自定义假设得到不同结果,例如:ln(2x) = ln(2) + ln(x) 如果 x 为正
能解大多数方程和不等式
函数:
所有常用函数:sine, log, 等…例如:ln5 = 1.609; sqrt(tan(20)-5) = sqrt(-2.76283905578)
大量统计、金融、几何及更多领域的函数(大约 200个)
If..then..else 函数,可选参数及可灵活创建更多特性的函数
能解大多数方程和不等式
单位:
支持所有国际单位制单位和前缀(包括二进制),也包括英制及其他单位系统
自动转换:ft + yd + m = 2.2192 m
隐式转换:5 m/s to mi/h = 11.18 miles/hour
智能转换:可将 5 kg*m/s^2 转换为 5 newton
误差传递
区间算法(用于确定有效数字或直接计算间隔的数)
容易创建、编辑或保存为标准 XML 文件
常量和变量:
基本常量:pi, e
大量物理常量和元素
可导入/导出为 CSV
容易创建、编辑或保存为标准 XML 文件
灵活,可以包含简单的数字、单位或者整个表达式
在类似数据库结构中包含对象和属性关联的数据集
绘图:
采用gnuplot
可绘制函数和数据(矩阵、向量)
支持保存绘制图像为 PNG、postscript等…
多个自定义选项
更新日志
5.6.0
- Add support for display of repeating decimals using overline (vinculum) instead of ellipsis
- Use selection (as if button was clicked) if RPN stack is visible when using keyboard shortcut for RPN operation
- Allow enter to accept input when creating history bookmark, and in last entry in set unknowns dialog
- Do not allow conversion using "to" in function expression (in edit function dialog)
- Add "-" after unit prefix symbol (k and M excluded), in completion list, to indicate that it must be followed by a unit
- Disable calculate as you type for expression containing export, load, or command function
- Use LANGUAGE environment variable, instead of LANG, on Windows in order to avoid changing regional format settings
- Use tabular numbers (tnum) font feature (fixes alignment with Adwaita font) in history, RPN stack, and for binary numbers in result
- Fix empty category field in matrix/vector edit dialog
- Fix segfault in some cases when creating variable with long title/value
- Fix copy result to clipboard (and inconsequential crash after any action) in Gnome shell search provider
- Fix expression status for multiple "to" expressions without preceding expression (not supported)
- Traditional Chinese translation
- Support all real numbers in binomial(), comb(), and perm() functions (libqalculate)
- Add boolean argument for reversed conversion (to text string) in bin(), oct(), dec(), hex(), and base() (libqalculate)
- Add support for units in limit() (libqalculate)
- Improve simplification and speed in diff() function for high orders (libqalculate)
- Show a warning when it appears as if the user tries to convert part of an expression (libqalculate)
- Improve handling of functions returning text string or value with angle unit, in angle and text arguments (libqalculate)
- Improve handling of random numbers in iterative functions and in function arguments of custom functions (libqalculate)
- Improvements/fixes for currencies and exchange rates (libqalculate)
- Fix integral with infinite limit with unit (libqalculate)
- Fix non-localized data set key properties (when translated version is available) (libqalculate)
- Fix angle conversion for (in)equalities (both sides where converted) (libqalculate)
- Fix default separator in load() and export() functions (libqalculate)
- Fix µ_B name/symbol for Bohr magneton (libqalculate)
- Fix incorrect limit for expression containing tan(x) when value to approach is pi/2 without direction (libqalculate)
- Minor bug fixes and feature enhancements
还是勇芳计算器,简单无敌好用
74M......至于么......