Find integral of int root(5)(sec x) tan^3 x dx

Tordellilgn

Tordellilgn

Answered question

2022-12-19

Find integral
sec x 5 tan 3 x d x = ? ? ? a ) 3 10 ( sec x ) 10 3 4 3 ( sec x ) 3 4 + c b ) 5 11 ( tan x ) 11 5 5 ( tan x ) 1 5 + c c ) N o n e d ) 5 11 ( sec x ) 11 5 5 ( sec x ) 1 5 + c e ) 2 ( sec x ) 2 1 5 ( sec x ) 1 5 + c

Answer & Explanation

Serenity Mason

Serenity Mason

Beginner2022-12-20Added 4 answers

Given:
sec x 5 tan 3 x d x sec x 5 tan 2 x tan x d x tan 2 x = sec 2 x 1 sec x 5 ( sec 2 x 1 ) tan x d x Apply  sec x = 4 u 2 1 u 4 / 5 d u ( u 2 4 5 1 u 4 / 5 ) d u ( u 10 4 5 1 u 4 / 5 ) d u ( u 6 / 5 1 u 4 / 5 ) ( f ( x ) ± g ( x ) ) d x = f ( x ) d x ± g ( x ) d x u 6 / 5 d u 1 u 4 / 5 d u 5 11 u 11 5 5 u 1 5 + c sec x = u 5 11 sec 11 5 5 sec x 5 + C 5 11 sec 11 5 ( x ) 5 ( sec x ) 1 5 + C

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