Page 55 - Math SL HB Sem 2
P. 55
9 Thevelocityvinms-lofamovingbodyattimersecondsisgivenbyv=e2t-l.Whent=05.
:
the displacement of the body is I 0 m. Find the displacement when r I .
(Total 6 marks)
10. A part ofthe graph of y: 2x i is given in the diagram below.
-
I
r
0
I 2
The shaded region is revolved through 360" about the.r-axis.
(a) Write down an expression for this volume ofrevolution.
(b) Calculate this volume.
(Total 6 marks)
3
