Please show and explain all steps used to get to the answer

5 Compute the length of the curve f ( x ) = 2 1 4-1 42 for 1 2 x = 4 3 a) Eliminate the parameter from the parametric equations x = e - 1 y = e 6) Sketch the parametric curve for Octc Jn 4 and indicate the implied direction in which the curve is traced out .Calculate the area of one petal of the three - petal rose ! r= sin 30