How do you take the derivative of -LSB- math -RSB- \ frac -LCB- x ^ 2 -RCB- -LCB- 2 -RCB- -LSB- / math -RSB- ?
What is the derivative of -LSB- math -RSB- xye ^ -LCB- - \ frac -LCB- 1 -RCB- -LCB- 2 -RCB- -LRB- x ^ 2 + y ^ 2 -RRB- -RCB- -LSB- / math -RSB- ?