How do I calculate -LSB- math -RSB- \ int \ frac -LCB- dx -RCB- -LCB- cosx + cosecx -RCB- -LSB- / math -RSB- ?
How does one calculate -LSB- math -RSB- \ int \ frac1 -LCB- x ^ 2 + a ^ 2 -RCB- dx -LSB- / math -RSB- ?