1) This is a semi-infinite case

( )

KT

T

erf

tx

txerf

TTTT

S

S

334

934.02801100

1100

934.0)297.1(

297.1)]s 1800(/sm1016.5[2

m 25.02

2

2/127

0

=

=−−

=

=⋅

=

⎟⎟⎠

⎞⎜⎜⎝

⎛=

−−

−α

α