Задача 20727 549) dx/(x+2) 551) sin4x dx...

melody

10.12.2017

549) dx/(x+2)
551) sin4x dx

SOVA

10.12.2017

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549
∫ ^(1)_(0)dx/(x+2)=(ln|x+2|)|^(1)_(0)=ln3-ln2=ln(3/2)
551
∫ ^(Pi/4)_(0)sin4xdx=(1/4)(-cos4x)|^(Pi/4)_(0)=
=(1/4)*(-cos(Pi)+cos0)=(1/4)*(1+1)=(1/4)*(2)=1/2