How do I evaluate -LSB- math -RSB- \ int \ frac -LCB- \ sec x -RCB- -LCB- 1 + \ csc x -RCB- dx -LSB- / math -RSB- ?
How do I evaluate the integral -LSB- math -RSB- \ displaystyle \ int \ frac -LCB- \ sin x -RCB- -LCB- \ sin 4x -RCB- \ , dx -LSB- / math -RSB- ?