ODE vs Think in Numbers

The ODESolverIntegrator is a simple but elegant app to find the integral of ODEs. You can solve (find the integral of) nonlinear ODEs. You can reduce the higher order ODE to a set of first order ODEs. You can solve (find the integral of) linear ODEs in the form of ẋ = Ax + Bu; y = Cx + Du. This app uses Runge-Kutta 4th order algorithm to solve the ODEs. Once the ODEs are solved, a beautiful interactive graph for each ODE's is created that you can share with other or save it locally. The reduced ODE's equations are presented beautifully in the math-equation format. You can compute definite integral (single, double, tripple). It uses the midpoint method. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. This app also has a Study page to help you learn important integration rules like, power rule, product rule, ect. This app is perfect for students learning calculus. Sharpen you brain by using this app and learning about the calculus. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!

Make numbers second nature with a little practice every day. Think in Numbers is a focused mental arithmetic game, with no ads and no account. CLASSIC STAYS FREE Every original feature stays free: unlimited addition, subtraction, multiplication, division and mixed play; Easy, Medium, Hard and Extreme difficulties; three answer choices; score and streak bonuses; best scores, accuracy and elapsed time; pause, saved games and result sharing. Your existing scores and preferences carry forward. GROW WITH NUMBERS PLUS An optional auto-renewing subscription adds: • Eight practice areas: the four core operations, percentages, fractions, negative numbers and missing-number equations. • A fresh ten-question daily workout, daily streaks and a 30-day archive. • Smart practice that focuses on less-practiced or weaker skills and adjusts difficulty as you answer. • A 60-second sprint to challenge your own pace. • Custom workouts with your chosen skills, difficulty, question count and multiplication tables from 1 to 20. • Clear answer explanations and a personal mistake-review queue. • Accuracy charts, skill summaries, daily goals, milestones and recent workout history. • CSV progress export and Ocean, Rose, Forest and Sunset training themes. Practice and progress are stored on your device. Classic and training questions work offline; an internet connection is needed to purchase or restore subscriptions through Apple. No login, analytics, ads or AI provider is required. Both monthly and yearly Numbers Plus plans unlock the same features. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in Apple Account settings. Restore Purchases is available in the app. Classic stays free if you cancel. Privacy: https://oanarinaldi.com/thinkinnumbersprivacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/