# Question #a5f39

##### 1 Answer

Oct 3, 2017

#### Explanation:

#=4intsec^3(x)[sec(x)tan(x)dx]#

Let

#=4intu^3du#

#=4(u^4/4)+C#

#=sec^4(x)+C#

Oct 3, 2017

#=4intsec^3(x)[sec(x)tan(x)dx]#

Let

#=4intu^3du#

#=4(u^4/4)+C#

#=sec^4(x)+C#

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