Only do D and E thx

47. Each of the following is an equation that determines y as an implicit function of r. Find in all cases an expression for dy/dx. (a) 12 + y? = 1, (b) y +1 = 1, (c) sinh(x) + cosh(y) = 1, * (d) ry - ery = 2, * (e) sin(y) ty = 23, (f) y' + x(x - 1)(r + 1) = 0