Write the coefficient a, b, c of which the value of the integral 
is independent.
Doing integration yields-
By substituting upper and lower limit in above equation=
)
=18a+bc
so now we can say this is independent of variable b
1
Write the coefficient a, b, c of which the value of the integral is independent.
Doing integration yields-
By substituting upper and lower limit in above equation=)
=18a+bc
so now we can say this is independent of variable b