What is the integral of -LSB- math -RSB- \ sqrt -LCB- \ frac -LCB- 1-x ^ -LCB- 2 -RCB- -RCB- -LCB- 1 + x ^ -LCB- 2 -RCB- -RCB- -RCB- -LSB- / math -RSB- ?
What is the integration of -LSB- math -RSB- x \ frac -LCB- \ sin ^ -LCB- -1 -RCB- x -RCB- -LCB- \ sqrt -LCB- 1-x ^ 2 -RCB- -RCB- -LSB- / math -RSB- ?