Let R be the region in the first quadrant bounded by the curves y = f(x) = 2x+ 1 and y = g(x) = 2x^2 − 8x + 9

Find the volume of the solid obtained by rotating the region R about y-axis using two dy-integrals.enter image description here

1) i am in trouble when he is asking to use two dy integral. I guess 1 to 3 and 3 to 9 it should be.

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  • $\begingroup$ Homework questions do not belong on MO. $\endgroup$ – LSpice May 22 at 21:07
  • $\begingroup$ i understand and you can delete it. $\endgroup$ – Ali May 22 at 21:27

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