`intdx/sqrt(13+5cosx-12sinx)`

intdx/(sqrt (3)cosx+sinx)

int(dx)/(13+3 cosx+4sinx)=

sqrt(3)cosx+sinx=1

intdx/(cosx-sinx)

intdx/(sinx(3+2cosx))

intdx/(sinx(3+2cosx))

intdx/(sinx(3+2cosx))

The derivative of the function, f(x)=cos^(-1){(1)/(sqrt(13))(2cosx-3sinx)}+sin^(-1){(1)/(sqrt(13))(2cosx+3sinx)}w.r.tsqrt(1+x^(2)) is

If f(x)=cos^(-1)(1/sqrt(13)(2cosx-3sinx)) +sin^(-1)(1/sqrt(13)(2cosx+3sinx)) , then find (df(x))/(dx) at x=3/4dot