Recent content by ohhohh

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    High School Calculating the Integral of (cos x)^2: Possible or Impossible?

    First use the half-angle formula to change the cos(x)^2 to (1+cos(2x))/2... This will allow you to break the integral into two separate problems much easier to solve integral{ 1/2dx + integral{ cos(2x)dx Then you will have x/2 + (sin(2x)/2) + C