Evaluate
show
substitution
u
x
integrand
:
x
sin
(
x
)
x
x
x
sin
(
x
)
x
log
(
x
)
x
log
(
x
)
x
-
1
x
x
sec
2
(
x
)
log
(
x
)
tan
-
1
(
x
)
sin
-
1
(
x
)
∫
x
sin
(
x
)
dx
