int_0^3(2pix^5dx)=2pi*int_0^3 x^5dx = 2pi*x^6 / 6|(0,3) =pi/3 (3^6 - 0^6)= pi/3 *729 = 243pi.
Based on findings of prior research, the author, Bronfenbrenner proposes that methods for natural observation research have been applied in ...
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