console.log("Type the following in this order pressing enter each time you see a semi-colon: \n var expr = new Expression('x'); \n expr = expr.subtract(3); \n expr = expr.add('x'); \n console.log(expr.toString()); \n var eq = new Equation(expr, 4); \n console.log(eq.toString()); var x = eq.solveFor('x'); \n console.log('x = '' + x.toString());");
Very cool project by the way.
Fun epub file trick: rename the file .zip, unzip -a yourbook.zip (double click unzip doesn't work on osx for me for some reason) and check out the html, css, images and xml of your book.
[1] https://en.wikipedia.org/wiki/EPUB [2] https://www.w3.org/TR/2005/WD-xhtml2-20050527/elements.html