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How do you find the integral of #cos(5x)#?

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Apr 14, 2018

Let #5x=t#
#=> dt= 5dx#

#intcos(5x)dx#

#=>intcost(dt)/5#

#=>intcost(dt)/5#

#=> sint/5 + c#

#=> sin(5x)/5 + c#

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