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Question #66116

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Apr 16, 2017

#"A"(x)=1/3sin3x-1/3sqrt3cos3x+"c"#

Explanation:

Recall that #intcos(ax)# #dx=1/asinx# and #intsin(ax)# #dx=-1/acosx#.

#intcos3x+sqrt3sin3x# #dx=intcos3x# #dx+sqrt3intsin3x# #dx=#
#1/3sin3x-1/3sqrt3cos3x+"c"#

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