What are the discontinuity and zero of the function -LSB- math -RSB- f -LRB- x -RRB- -LSB- / math -RSB- of -LSB- math -RSB- \ frac -LCB- 9x ^ -LCB- 9x -RCB- -18 -RCB- -LCB- 3x +6 -RCB- -LSB- / math -RSB- ?
What are some of the most fabulous math fallacies ?