Q14 of 865 Page 19

Write a value of

given ∫ tan x sec³ x dx

= ∫ (tan x sec x ) sec² x dx

Let sec x=t

Differentiating on both sides we get,

tan x sec x dx=dt

Substituting above equation in ∫ tan x sec³ x dx we get,

=∫t² dt

Write a value of