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Screenshots
Description
Welcome to version 0.9a of RK-89.
RK-89 is the latest release in the most advanced graphing calculator suite available on the App Store. RK-89 introduces symbolic calculation features to the RKalk engine that already powers RK-83.
Were dedicated to making sure your experience with RK-89 is absolutely unprecedented. This early release gives you access to the powerful new features offered by RK-89 and allows us to gather the crucial user feedback we need to keep RK-89 on the cutting edge. Count on the same fast-paced development schedule that thousands of RK-83 users already enjoy; expect updates as quickly as the App Store approval process allows.
The already robust RKalk libraries include:
- numerical integration and solvers
- list and matrix manipulation
- descriptive statistics
- trigonometric and other standard math functions
RK-89 version 0.9a builds on this rock-solid foundation, adding these math and programming features:
- conditions, loops, and boolean operators.
- list creation. `seq(expression, variable, low, high, [step])`
"seq(X^2,X,0,5)" ==> "{0,1,4,9,16}"
- anonymous functions. `func(variable, value expression)`
"func(X,Y,X+Y)->G", "G(3,5)" ==> "8"
- symbolic integration. `integrate(expression, variable)`
"integrate(X^2, X)" ==> "(1/3)x^3"
- symbolic derivatives. `deriv(expression, variable)`
"deriv(X^2, X)" ==> "2x"
Version 1.0 will include arbitrarily precise calculation, symbolic limits, extensions to the existing programming interface, expanded symbolic calculus and statistics routines, and more.
We need your feedback to keep improving RK-89. Tell us what you think.
[email protected]
Estimates
Availability
Devices
iPhoneFirstGen
iPodTouchFirstGen
iPodTouchSecondGen
iPhone3G
iPhone3GS
iPadWifi
iPad3G
iPhone4
iPodTouchThirdGen
iPodTouchFourthGen
iPad2Wifi
iPad23G
iPhone4S
iPadThirdGen
iPadThirdGen4G
iPhone5
iPodTouchFifthGen
iPadFourthGen
iPadFourthGen4G
iPadMini
iPadMini4G
iPhone5c
iPhone5s
iPadAir
iPadAirCellular
iPadMiniRetina
iPadMiniRetinaCellular
iPhone6
iPhone6Plus
iPadAir2
iPadAir2Cellular
iPadMini3
iPadMini3Cellular
iPodTouchSixthGen
iPhone6s
iPhone6sPlus
iPadMini4
iPadMini4Cellular
iPadPro
iPadProCellular
iPadPro97
iPadPro97Cellular
iPhoneSE
iPhone7
iPhone7Plus
Pricing by country
| Country | Price |
|---|---|
| Canada | 27.99 CAD |
| China | 128 CNY |
| France | 19.99 EUR |
| Germany | 19.99 EUR |
| Italy | 19.99 EUR |
| Netherlands | 19.99 EUR |
| Portugal | 19.99 EUR |
| Spain | 19.99 EUR |
| Poland | 19.99 EUR |
| UK | 14.99 GBP |
| India | 999.99 INR |
| Japan | 999.99 JPY |
| Russia | 999.99 RUB |
| Turkey | 52.99 TRY |
| USA | 19.99 USD |
| Korea, Republic Of | 21.99 USD |
| Ukraine | 19.99 USD |
