If `y =(2 - 3 cos x)/sinx`, find `dy/dx` at `x=pi/4`

y=x/sinx . Find dy/dx

(i) If y= 6x^(5) -4x^(4) -2x^(2) +5x -9 " find " (dy)/(dx) at x = -1 (ii) If y = (sin x + tan x) , " find " (dy)/(dx) at x = pi/4 (iii) If y = ((2 -3 cos x))/sin x , " find " (dy)/(dx) at x = pi/4

If Y = ((2 - 3 cos x)/("sin" x)) , then (dy)/(dx) at x = (pi)/(4) is

If 2x + 3y=cos x then find (dy/dx)

If 2x+3y=cos x , find (dy)/(dx)

If y=|cosx|+|sinx| , then (dy)/(dx)" at "x=(2pi)/(3) is

y = sinx.e^x . Find dy/dx