By far the most popular and well-stocked category of used instruments is our selection of guitars, where we've got a huge variety of all the big names. Used Gibson Les Paul, pre-owned Fender Telecaster and secondhand Stratocaster guitars are commonly found within these pages, waiting for their new homes with players and collectors.
22/7 is a pretty decent choice for teaching 11-year-olds about fractions that are close to pi. 355/113 would be better, if you think they can remember numbers that big. And approxRational is fun. Exercise for the interested reader: implement an inverse to approxRational.
Analytical solution gives the exact solution. Numerical solution gives the approximate solution. Example: F(x)=x-7. Analytic=> say x-7=0 and x=7. Numerical=> F(8)=8â7=1 and F(6)=6â7=-1. so answer in range 6 to 8. next find the middle point and iterate the process.