Question

If
  ,
1
x f
x







x
show that
  . 0 1
"
 f
(3)
(b) Find the n
th
derivative of
.
2 2
a x
x

(3)
(c) If cos
,
n
x
log
b
y
n






 





then show that
  0 2 1 2
2
1 2
2
   
  n n n y n xy n y x
(4)

Answer 1

Unfortunately, we have not understood the condition of question.