i just want to know which one a,b,c or d

1.

Given the curves and lines below. y= e*+1,y=x+1,x=0,x=1 The enclosed region is rotated about the x-axis. ALL statements are TRUE EXCEPT O a. The cross sectional area of outer circle is T(ezz + 2x + 1) O b. Volume, V = (e2x + 2el + x -2x)dx O c. Volume, V = 3e- + 12e - 23 6 O d. Cross sectional area of the disks A(ac) = [(ex + 1)2 - (2 + 1)2]Given y = Va, y = > - 2, the lines x = 2 and x = 4 Which of the following is TRUE? O a. ALL are TRUE O b. A(x) = falvx -(x -2)]dx O c. Area, A(x) = 0.45 O d. The intersection points are at x=0 and x=4.Evaluate dx (1+ vx)2 Which of the following is FALSE. O a. is equal to + c O b. the substitution is u = va O c. is transformed to / , du