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Need help with determining the structural formula!!? Can a whale get hit by an anchor or have an anchor dropped on it? Calculate the indefinite integral ((3x-9)/(sqrtx^2-6x+1)) dx? Evaluate the definite integrals sin(2x)sinx dx when you have pi on the top of the integral sign and 0 on the bottom? How to integrate f(x)=(3-2/x)^2?