Visit www.rkalk.com to see video tutorials on powerful RK-83 features! Don't 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: contact@rkalk.com The RK-83 grapher is intuitive, powerful, and easy to use. The features you'll love: -Touchable panning and pinch zooming -Vibrant multi-colored graphs -The best graph tracing you've ever seen -Full screen shots Version 1.2 is available now! It adds the much requested degree/radian mode! It's 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.
