Determinants Involving Integrations
Let D(x) =
where
a, b, c, l, m and n are constants.
&⇒
=

Note:
If the elements of
more than one column or rows are functions of x then the integration can
be done only after evaluation / expansion of the determinant.
Example.1
Let 
Prove that
Solution
Operate R1 → R1 –
secx R3


