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RK-83: Scientific Graphing Calculator

RK-83: Scientific Graphing Calculator at Mac App Store analyse

Knign LLC
Utilities Education
4,175 ratings · Power index: 3120
Free Mac App Store Follow Website
Version 1.2.4
Size 1.24 Mb
Updated 9 years ago
Released 29 Aug 2009

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Description

Visit www.rkalk.com to see video tutorials on powerful RK-83 features! Dont spend $100+ on an old fashioned graphing calculator. Get all these features (plus more added with every FREE update): Algebra and Trigonometry: -Functions for calculating the absolute value, floor, ceiling, gcd, fractional part, integer part, and more -Nestable functions: gcd(4,gcd(14,6)) -Scientific Notation with 14 digit precision: the highest possible machine level precision for iPhone -Standard trig functions (sine, cosine, cosecant, secant, cotangent) -Hyperbolic and inverse trig functions Statistics: -Min, max, mean, standard deviation, variance -Easy to use list syntax: stdDev({1,2,3,2}) -Create custom lists: seq(rand*X,X,1,5) Calculus: -Calculate the area under a curve: fnInt(2X, X, 1, 2) -Find a point derivative: nDeriv(X^2+X, X, 0) -Solve for zeros: solve(X^2 - 2, X, 1.5) -Complex number operations: conj(), real(), imag() Linear Algebra: -Matrices use built in operators, like "*" for multiplication: [[1,2][3,4]] * [[5,6][7,8]] -Use built-in functions on matrices: sin({1, 2, 3}) -Get the dimensions of a matrix: dim([[4, 5, 6][7, 8, 9]]) Extras: -Email your calculation history -Get support online at RKalk.com, or email us directly: [email protected] The RK-83 grapher is intuitive, powerful, and easy to use. The features youll love: -Touchable panning and pinch zooming -Vibrant multi-colored graphs -The best graph tracing youve ever seen -Full screen shots Version 1.2 is available now! It adds the much requested degree/radian mode! Its faster and more powerful than ever! New in Version 1.2: -Create and modify lists: sortA(seq(rand,X,1,10)) -User-defined functions: func(X, X^2)->G -While loops: while(not(isPrime(X)), X+1->X) -Degree and radian angle modes (in Settings below the Graph button) -Quickly adjust your graph scale for "Degree Mode" with the new "ZoomTrig" button -Faster graphing Visit www.rkalk.com for documentation, including video tutorials, sample problems, and function reference.

Estimates

Monthly Downloads > 68.64k
Est. Revenue ~ $28.08k
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Competitors

# App Common keywords
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27 Calculator Air: AI Math Solver 15
28 Solve - Graphing Calculator 15
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32 Calculator‘ 13
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34 Calculator XLt 12
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36 scientific Calculator S+ 11
37 Calculate: Advanced Calculator 11
38 Calc 2M 11
39 Calculator ∞ 11
40 Calculator HD Pro Lite 11
41 powerOne Scientific Pro 10
42 GraphNCalc83 10
43 Graphing Calculator Pro² 10
44 TI-84 CE Calculator Manual 10
45 TI Nspire Calculator Manual 10
46 EduCalc Pro 9
47 GraphMe Lite: Graphing Calculator 8
48 Graphing Calculator X84 8
49 Symbolab Graphing Calculator 7
50 Scientific Calculator Elite 6

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 iPad611 iPad612 iPad71 iPad72 iPad73 iPad74 iPhone8 iPhone8Plus iPhoneX

Pricing by country

Country Price
Canada 1.39 CAD
China 6 CNY
France 1.09 EUR
Germany 1.09 EUR
Italy 1.09 EUR
Netherlands 1.09 EUR
Portugal 1.09 EUR
Spain 1.09 EUR
Poland 1.09 EUR
UK 0.99 GBP
India 79 INR
Japan 120 JPY
Poland 4.99 PLN
Russia 75 RUB
Turkey 4.49 TRY
USA 0.99 USD
Korea, Republic Of 1.09 USD
Ukraine 0.99 USD

Reviews

All reviews →

good caculator

cissou1702 · 15 years ago · v1.2.3

very usefull but need an update for retina display cette calculatrice est tres utile mais il y a brsion dune MAJ pour la prise en charge de lecran retina. merci davance au developpeur

Pas mal

PatriceGz · 15 years ago · v1.2.3

Les graphes sont corrects. Mais la précision est très moyenne : sin(pi)=-4.10206857e-10 ?! cos(pi/2)=-2.051034285e-10 ?! e^(i*pi)+1=-4.10207e -10i ?! A peu près 90% de la TI-83 est implémenté. Des choses ridicules comme le pi du Kansas. Mais finalement, cest très correct pour le prix.

Bien mais plante

mephistochess · 14 years ago · v1.2.3

Sympa mais des quon souhaite utiliser une fonction math, lappli plante sur iPhone 4s iOS 5.0.1.... Donc inutilisable. Dommage car le design est tres réussi.

Génial jusquà dernière mise à jour

denis2vol · 9 years ago · v1.2.4

Nest pas supportée par iOS 10 Dommage

Absturz bei Grafikmodus

Mathematiker · 16 years ago

Auf der Suche nach dem besten Rechner für das iPhone hab ich auch den RK-83 probiert. Leider stürzt das Programm ab, wenn man in den Graph-Modus wechseln möchte! Bitte dringend nachbessern!!

Eingeschränkt genial

xkleber · 14 years ago · v1.2.3

Eigentlich ein guter Rechner, ABER das letzte Ergebnis kann nicht in den nächsten Schritt übernommen werden (ANS-Funktion). Das schränkt die Möglichkeiten leider extrem ein. Bitte bitte bald nachbessern!

Perfect!

gainingXground · 16 years ago

My math Tudor told me I needed to buy a Texas instruments ti-83 so I could do my graphing calculations. That costs $120.00 so I decided I would check the app store and see if anything was out there that would work. I found this and saw the pricetag was $.99 so I was a bit skeptical but this app definitely proved itself to me. It saved me well over $100 and it does everything the ti-83 would do, my math teacher could hardly believe it.