ज्ञात करें `int (dX)/(sin x + cos x)`

Explanation

`int(dx)/(cos x + sin x)= int (dx)/(sqrt2(1/sqrt2cosx+1/sqrt2six))`
`=1/sqrt2int(dx)/(cosxcos""pi/4+sin x sin ""pi/4)=1/sqrt2int(dx)/(cos(x-pi/4))`
`=1/sqrt2intsec(x-pi/4)dx=1/sqrt2log|sec(x-pi/4)+tan(x-pi/4)|+c`