\
Step 1 :
\The equation of the wire is and
.
The wire density is .
Mass of the wire is .
Where .
Compare with
.
and
.
Substitute and
in equation (1).
Substitute in
.
Step 2 :
\Find mass of wire :
\Consider then
.
Find the new limits:
\when ,
.
when ,
.
Substitute the corresponding values in equation (2).
\The mass of the wire is .
Solution :
\The mass of the wire is .