Cho hình phẳng giới hạn (H) như hình vẽ bên. Thể tích khối tròn xoay sinh ra khi quay hình phẳng (H) quanh trục Ox là:
A.$ V=\pi \int\limits_{a}^{b}{\left[ {{g}^{2}}\left( x \right)-{{f}^{2}}\left( x \right) \right]dx} $
B.$ V=\pi \int\limits_{a}^{c}{\left[ {{g}^{2}}\left( x \right)-{{f}^{2}}\left( x \right) \right]dx}+\pi \int\limits_{c}^{b}{\left[ {{f}^{2}}\left( x \right)-{{g}^{2}}\left( x \right) \right]dx} $
C.$ V=\pi \int\limits_{a}^{c}{\left[ {{f}^{2}}\left( x \right)-{{g}^{2}}\left( x \right) \right]dx}+\pi \int\limits_{c}^{b}{\left[ {{g}^{2}}\left( x \right)-{{f}^{2}}\left( x \right) \right]dx} $
D.$ V=\pi \int\limits_{a}^{b}{\left[ {{f}^{2}}\left( x \right)-{{g}^{2}}\left( x \right) \right]dx} $
A.$ V=\pi \int\limits_{a}^{b}{\left[ {{g}^{2}}\left( x \right)-{{f}^{2}}\left( x \right) \right]dx} $
B.$ V=\pi \int\limits_{a}^{c}{\left[ {{g}^{2}}\left( x \right)-{{f}^{2}}\left( x \right) \right]dx}+\pi \int\limits_{c}^{b}{\left[ {{f}^{2}}\left( x \right)-{{g}^{2}}\left( x \right) \right]dx} $
C.$ V=\pi \int\limits_{a}^{c}{\left[ {{f}^{2}}\left( x \right)-{{g}^{2}}\left( x \right) \right]dx}+\pi \int\limits_{c}^{b}{\left[ {{g}^{2}}\left( x \right)-{{f}^{2}}\left( x \right) \right]dx} $
D.$ V=\pi \int\limits_{a}^{b}{\left[ {{f}^{2}}\left( x \right)-{{g}^{2}}\left( x \right) \right]dx} $
Loga
Hóa Học lớp 12
