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V = x² dy if the area is bounded by the curve y=f(x), the yaxis, y=a and y=b is
rotated through 360° about the yaxis.
V = y² dx if the area is bounded by the curve y=f(x), the xaxis, x=a and x=b, is
rotated through 360° around the xaxis.
Integration by recognition
Integration of exponential functions and Logarithmic functions
Integration and solids of revolution