| Offers 47 equations for HP Prime's Solver App. Just run the eqlib program, select the category that you are interested in, and select the equation within that category and you are off and running. Categories include: Geometry (areas, volumes, surface areas), Finance (monthly loans, sales tax, break-even), Temperature Conversion (Fahrenheit to and from Celsius), Physics: Problems of Motion (linear distance, circular motion, pendulums, terminal & escape velocity), Sound (speed of sound, Doppler effect, loudness), Optics (Lens and Snell equations, spherical refraction), Electronics (2 resistors series and parallel, thermal noise, Ohm's Law), Astronomy (parallax, luminosity, Kepler's 3rd Law, time dilation), Great Circle Calculations, Angle of Incidence Calculations, Gases (Ideal and Boyle's Gas Laws, heat capacity, air density, isothermal expansion), and Fluids (depth pressure, fluid flow, Bernoulli's Equation). |
Calculates the monthly payment of lease several payments are paid simultaneously at the beginning of the lease. Requires firmware 13441 or higher.
Given the right ascension (α) and declination (δ) of two stars of the same epoch (J2000.0 is the most current), calculates the distance between the stars.
Simulates a race between seven racers. Betting is not included.
Retrieves data about our solar system planets, including our dwarf planet, Pluto, presenting you with a choose menu which will present a screen of all the data for a planet. It also has a routine to pull out a specific data point for calculations. Data available are name, radius (km), mass (kg), gravity (m/s^2), density (g/cm^3), axial tilt (°), period (days), and number of moons.
Calculates the Bessel function of the first kind. Two different approaches are shown.
Draws square blotches with random colors.
Two programs to tackle common financial questions of purchasing automobiles, or other equipment that might be financed. CARPMT calculates what would be the monthly payment, while CARAFFORD calculates the sticker price that the buyer can afford.
Lets the user scroll through various colors (black/blanco, gray/gris, white/blanco, etc.) using the plus and minus buttons, showing the names in both English and Spanish.
Calculates the payments for both separate loans and combined loans. This particular loan covers of three types: 80:20, 80:15:5, and 80:10:10.
In most loans and mortgages, the amount of payment applying to interest and principal depends on the running balance. This program assumes the customer wants an equal portion to apply to principal each payment. As a result, the payment itself, principal and interest, will vary.
Explains the 3D features of the LINE and TRIANGLE commands, with sample code to draw 3D lines and boxes.
A function that draws a set number of cards from a deck of 52 standard playing cards, along with a program that uses it to allow you to play poker.
Has the program FIBMAT to generate the Fibonacci Triangle in matrix form, and the program FIBTRI to visualize the Fibonacci Triangle.
The object of the game is to unscramble five-letter words. You only get one chance, but there is no time limit. Try to get a high score! Written in Python.
Plots a fractal to simulate a Julia Set. The program will ask for a sample graphing space with a border B. It will also ask for the number of points (G), which will determine the number of points plotted in the graph. The higher G is, the more detailed the fractal is; however, the plot will take longer to complete.
This app is part of a tutorial of making custom user apps for the HP Prime. Notes of how the app is made, as well as an app itself, are included in the zip file. GeomCalc has ten geometric calculations: five areas and five volumes. Requires at least firmware 13333.
Calculates three heat properties of liquid water based on its temperature: specific heat capacity of water (ratio of heat added or removed from an object to cause a temperature change), measured in J/(g*°C), latent heat of evaporation, measured in kJ/kg, and latent heat of fusion, measured in kJ/kg. The program accepts three measurements for liquid water, Fahrenheit (°F), Celsius (°C), or Kelvin (K).
RPN simulator for the HP 39g+ series. Function wise, it is an equivalent of between an HP 35 and 45. Programmed in basic, and can be run from any applet.
Calculates how many payments are required to finish a loan, given a certain annual interest rate and payment. Payments are assumed to be monthly, and end of period. The program will also return the last payment. Due to the rounding in the financial algorithms, the last payment is an approximate (unless the interest rate is 0%).
Attempts to fit bivariate data to the curve y = a + b * x + c * e^x. The LSQ (least square) function is used. The output is a list of three matrices.
Generates some images mathematically, including Blue Diamond, Lake, Tree Trunk, and Yin Yang on the Prime, as well as Cat, Dog, Pisces, and Question Block on the 42S.
Programs to create an n by n matrix based on the elements of a given list. Each row has each of the elements rotated one element, either left (LSM) or right (RSM).
Calculates four calculation points and three parameters of A, γ, and β of the Incomplete Gamma Law: g(x) = 1 / (β^γ * gamma(γ)) * x^(γ - 1) * e^(x/β).
A simple game where the machine randomizes between $250 to $50,000. Press [Enter] whenever you feel lucky.
Determines when the next start point of a desired phase of the Earth's moon will occur given a month and year.
Simple game where the objective is to collect dollar signs (coins) to unlock the boundary at the top of the screen to allow access to the goal. Trees block your progress. Avoid the purple foes at all times, one touch and it's over! One purple foe jumps around randomly while two fly horizontal.
Determines three characteristics of a conic section: the eccentricity, perigee, and apogee, given the lengths of the semi-major axis (A) and the semi-minor axis (P).
Calculates the pitch and angle of various roof heights. The pitch of a roof is the number of inches of vertical rise per 12 inches. For example: a roof of 3/12 is pitch is a roof that rises 3 inches for every 12 horizontal inches. This program demonstrates the angle computer given different roof pitches. You control the rise, anywhere for 0.5 ft to 12 ft. Use the up and down arrow keys to control the rise.
A Pythagorean triple is a trio of positive integers a, b, and c, that describe the lengths of a right triangle, where a and b are the lengths of the sides while c is the length of the hypotenuse. This program asks you for m and n and generates a Pythagorean triple. Make sure that m > n.
Determines the population of rabbits and foxes over time as modeled by the differential equations dr/dt = 2 * r - α * r * f and df/dt = -f + α * r * f. Includes two versions, one which gives numerical results and one which plots the results.
Offers 47 equations for HP Prime's Solver App. Just run the eqlib program, select the category that you are interested in, and select the equation within that category and you are off and running. Categories include: Geometry (areas, volumes, surface areas), Finance (monthly loans, sales tax, break-even), Temperature Conversion (Fahrenheit to and from Celsius), Physics: Problems of Motion (linear distance, circular motion, pendulums, terminal & escape velocity), Sound (speed of sound, Doppler effect, loudness), Optics (Lens and Snell equations, spherical refraction), Electronics (2 resistors series and parallel, thermal noise, Ohm's Law), Astronomy (parallax, luminosity, Kepler's 3rd Law, time dilation), Great Circle Calculations, Angle of Incidence Calculations, Gases (Ideal and Boyle's Gas Laws, heat capacity, air density, isothermal expansion), and Fluids (depth pressure, fluid flow, Bernoulli's Equation).
Shows a miniature version of the famous Sieve of Eratosthenes. The Sieve of Eratosthenes is a Greek algorithm that determines prime numbers from 2 to N through eliminating multiplies.
Using Simpson's Rule, approximates the integral of f(X): ∫f(X)dX=h/2*(f(a)+2*Σf(x_E)+4*∑f(x_O)+f(b)) where a is the lower limit, b is the upper limit, n is the number of intervals and is even, h is (b–a)/n, x_E is a+h*I where I is from 1 to n-1 and I is even, and x_O is a+h*I where I is from 1 to n-1 and I is odd.
Special Functions 2 expands on the Special Functions library, and contains new functions which include Set Theory (Union, Intersect, Relative Compliment), Complex Analysis (Derivative [Cauchy-Reimann Equation Test], Gradient), Stopwatch, more special functions (Si, Ci, Li, Ei, GD, Zeta, now with Roman Factorial, Pochhammer Function), Number Theory (Perfect Integer test, Arithmetic-Geometric Mean, Bernoulli Numbers [5 decimal place approx], and Fibonacci Numbers), a two week calendar, Finance (including net present value, internal rate of return, depreciation, net future value, PITI), and more.
Given a positive integer n, it can be possible to find two non-negative integers x and y such that n = x^2 + y^2. This program uses iterations to find all possible pairs which fit n = x^2 + y^2. Some integers do not have representations, others have more than one. The program will show all possible combinations.
Simulates the Showcase Showdown round of the game show The Price Is Right. The wheel consists of amounts from 5 cents to 1 dollar in increments of 5 cents. The goal is to get closest to $1.00 without going over. On the game show, the winner of the Showcase Showdown advances to the final Showcase round.
Two trains are heading towards each other, on their own separate train track. Each train has going at their own speed (velocity). The trains start out a distance apart. This program calculates when and where the trains will cross over the same spot.
Simulates rolling two six-sided dice.
Calculates the midsegment, height, and area of a trapezoid.
Using the Trapezoidal Rule, approximates the integral of f(X): ∫f(X)dX=h/2*(f(a)+2*Σf(x_I)+f(b)), where a is the lower limit, b is the upper limit, n is the number of intervals, h is (b–a)/n, and x_I is a+h*I where I is from 1 to n-1.
Modeled after the game board in the 1950s-1980s television show Treasure Hunt. Presents you with 12 boxes, one has $50,000. Select a box by just tapping the screen. You will then be presented with a sure thing. A choose box will be presented where you make your choice to take the sure thing or take a risk and open the box. Good luck!
Background boxes with falling water. There is random mist coming from the water.
Does calculations for a Wheatstone bridge circuit. Given the four resistances and the input voltage, calculates the voltages in the middle and each side of the bridge.
Calculates the Wilson Score interval, a good way for ranking things like popularity and skill of video game players, given the total number of trials and the number of "likes".