KnightRider
  • KnightRider
x^2 cos(xy) integrate?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
with respect to what x or y
anonymous
  • anonymous
You can to integration by parts, however I prefer the Tabular Method: let u = x^2 v= cos(x) (until 0 is obtained) Alternating Signs U and its derivatives V and its antiderivatives + x^2 cos(x) - 2x sin(x) + 2 - cos(x) - 0 - sin (x) Now multiply diagonal terms and add: int. (x^2cos(x) = + x^2sin(x) + 2xcos(x) - 2sin(x) + C The Tabular Method can also be used for a few other integration problems. Try looking it up
KnightRider
  • KnightRider
with respect to y

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anonymous
  • anonymous
nm i didnt see the xy*
anonymous
  • anonymous
\[xsin(xy)\]
KnightRider
  • KnightRider
how did u find it?
anonymous
  • anonymous
treat x as a constant (for example pretend it is a 2) use then use u substitution
anonymous
  • anonymous
do you understand
KnightRider
  • KnightRider
yeah i got u thnx alot

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