About Copyright (c) 2009-2011\n\nCreated by serso aka se.solovyev\n\n This program is open source:\nall source code can be found on\nhttp://github.com\n\n For more information please\ncontact the author by email\nse.solovyev@gmail.com \nor visit\nhttp://se.solovyev.org\n\n If you want to support the project\nyou can donate money via\nhttp://paypal.com\n\n If you like the application\nrank it with 5 stars in\nandroid.market\n\n Thanks to people who translate Calculator++ in different languages:\n Italian - Gabriele Ravanetti\n Spanish - Jordi Luna\n\n This application uses next open source libraries:\n Simple (XML serialization)\n JSCL\n AChartEngine Release notes "Release notes for version " 1. Haptic feedback\n 2. Two layouts: calculator and cellphone\n 3. New constants\n 4. ERROR message is not so often now 1. Screen with all functions\n 2. Added support for decimal logarithm, factorial, comparison functions\n 3. Haptic feedback duration preference 1. Saving constants in two clicks (use +π button)\n 2. Result size is auto adjusted to fill all spare space\n 3. Fix for Xperia Ray blank result\n 4. Double factorial fix\n 5. Degrees added (use °: e.g. 30° and result will be converted into radians) 1. Support for entering numbers in scientific notation (2.3E2)\n 2. Added functions: deg(), rad() to convert from radians to degrees and vice versa\n 3. Added support for installing application on sd card\n 4. Added possibility to save entire expression as constant (e.g. type ln(6t), press +π button, enter name and save)\n 5. Fixed bug with abs() function and complex argument\n 6. Fixed bug with displaying result 1. Fixed bug with i^3\n 2. Fixed crash in case of many brackets 1. Percentage calculations.\n Examples:\n 100+50%=150,\n 100*50%=50,\n 100+100*50%*50%=125,\n 100+(100*50%*(25+25)%+100%)=150\n NOTE:\n 100+(20+20)%=140, but 100+(20%+20%)=124.0\n 100+50%^2=2600, but 100+50^2%=101.08 1. Help screen added\n 2. Support for differentiation, integration, calculation of sum and product.\n Examples:\n ∂(cos(t),t)=-sin(t)\n 2∂(tcos(t),t,2)=-4.469\n Σ(n/n!,n,1,20)=2.7182\n ∫(1/x, x)=ln(x)\n ∫ab(x, x, 0, 10)=50.0 1. Fixed crashes\n 2. Added variables on the main screen 1. Support for different angle units: radians, degrees, gradians, turns\n 2. Easy toggling between radians and degrees: use the toggle switch located on the 6 button\n 3. Application is translated in Italian (thanks to Gabriele Ravanetti)\n 4. Fixed bug with simplification of √(π^2) 1. Added functions\' plotting: type expression which contains 1 undefined variable (e.g. cos(t)) and click on the result. In the context menu choose \'Plot graph\'. Supported features: zoom in/out, moving graph, plotting imaginary part 1. Buttons swipe preference\n 2. Added support for different numeral bases (currently supported: dec, bin, oct). Dec and bin can be chosen from main screen (CE button) and from app preferences\n 3. Fixed √ simplification problem\n 4. Performance improvements in functions\' plotting 1. New swipe actions (left, right)\n 2. Extended history: save, remove, copy, use from history screen (use long click for additional actions)\n 3. Added Spanish language\n 4. Full numeral base support (dec, hex, oct, bin)\n 5. !!!: Fix for multiplication sign on some devices - if you have strange symbols instead of × - go to the settings and change multiplication sign to *\n 6. Bug fixes: correct double factorial calculation, 20x fix, e^(pi*i)+1 fix and others 1. Release notes screen added\n 2. Added categories in functions and constants screens\n 3. Additional actions are available for constants, functions and operators (long click on the item and choose from context menu)\n 4. Logarithm function added - calculate logarithm of any base \n 5. Back button preference\n 6. Variant of π constant independent from angle units