For n ge 2, " if " I(n)=intsec^(n)xdx, "...

For `n ge 2, " if " I_(n)=intsec^(n)xdx, " then " I_(4)-2/3I_(2)=`

A

(a) `sec^(2)xtanx+C`

B

(b) `1/3sec^(2)x tanx + C`

C

(c) `2/3sec^(2)xtanx+C`

D

(d) `1/3logabs(secc+tanx)+C`

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The correct Answer is:

B

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