√ and g(x)= )=x² Let R be the region in the first quadrant bounded by the x-axis and the curves f(x) = - revolved about the x-axis, which of the following expressions gives the volume of the resulting solid? I. *m(f(x)² = g(x)²)dx Sªnf(x)² dx - √ng(x)² dx III. [² mf(x)² dx + √* n(f(x)² = g(x)²³) dx O I only OIII only II. I and III only II and III only -x-1. If R is

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