var fDesc=new Array(); fDesc[0] = "This is a product which can be found most useful by scientists, engineers, professors, and students.
This calculator calculates derivative functions of high orders in symbolic and numeric forms. Numerical coefficients and values are calculated with precision 14-16 digits.
There is also possibility to use symbolic parameters ( for example, sin(a*x) cos(b*x) 2*c), but then numeric values and graphs cannot be calculated, of course.
Obtained symbolic formula can be used with Graphing Calculator 2D and Graphing Calculator 2D Numeric for drawing graphs."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }