Is -LSB- math -RSB- \ frac -LCB- x -RCB- -LCB- y -RCB- -LSB- / math -RSB- odd if x and y are odd ?
How do I find the inverse of -LSB- math -RSB- y = x + \ frac -LCB- 1 -RCB- -LCB- x -RCB- -LSB- / math -RSB- ?