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A \(I =  - {1 \over 4}{\pi ^4}\)

B \(I =  - {\pi ^4}\)

C \(I=0\)

D \(I =  - {1 \over 4}\)

A \(I = 2\int\limits_8^9 {\sqrt u du} \)

B \(I = {1 \over 2}\int\limits_8^9 {\sqrt u du} \)

C \(I = \int\limits_9^8 {\sqrt u du} \)

D \(I = \int\limits_8^9 {\sqrt u du} \)

A \(I = \left. {\left( {{{{u^3}} \over 3} + u} \right)} \right|_1^2\)

B \(I = \left. {{4 \over 3}\left( {{u^3} + u} \right)} \right|_1^2\)

C \(I = \left. {2\left( {{{{u^3}} \over 3} + u} \right)} \right|_1^2\)

D \(I = \left. {{1 \over 3}\left( {{{{u^3}} \over 3} + u} \right)} \right|_1^2\)

A \(a = 2\)

B \(a = {1 \over 2}\)        

C \(a = \sqrt 2 \)

D \(a = 4\)

A \( - {2 \over 3}\)

B \(4\sqrt 3  - 1\)

C \({{2\sqrt 3 } \over 3}\)

D Kết quả khác

A \(I = \int\limits_1^0 {\left( {1 - u} \right)du} \)

B \(I = \int\limits_0^1 {\left( {1 - u} \right){e^{ - u}}du} \)

C \(I = \int\limits_1^0 {\left( {1 - u} \right){e^u}du} \)

D \(I = \int\limits_1^0 {\left( {1 - u} \right){e^{2u}}du} \)

A \(I = {2 \over 3}\int\limits_1^2 {tdt} \)          

B \(I = {2 \over 3}\int\limits_1^2 {{t^2}dt} \)

C \(I = \left. {{2 \over 9}{t^3}} \right|_1^2\)

D \(I = {{14} \over 9}\)

A \(f\left( t \right) = {2 \over {{t^2}}} - {1 \over t}\)

B \(f\left( t \right) =  - {1 \over {{t^2}}} + {2 \over t}\)

C \(f\left( t \right) = {2 \over {{t^2}}} + {1 \over t}\)

D \(f\left( t \right) =  - {2 \over {{t^2}}} + {1 \over t}\)

A \(2a + b = 1\)

B \({a^2} + {b^2} = 4\)

C \(a - b = 1\)

D \(ab = 2\)

A \(\int\limits_{ - a}^a {f\left( x \right)dx}  = 2\int\limits_0^a {f\left( x \right)dx} \)

B \(\int\limits_{ - a}^a {f\left( x \right)dx}  = 0\)

C \(\int\limits_{ - a}^a {f\left( x \right)dx}  = 2\int\limits_{ - a}^0 {f\left( x \right)dx} \)

D \(\int\limits_{ - a}^a {f\left( x \right)dx}  =  - 2\int\limits_0^a {f\left( x \right)dx} \)

A \(I =  - \int\limits_{\sqrt 2 }^{{2 \over {\sqrt 3 }}} {{{{t^2}} \over {{t^2} - 1}}dt} \)

B \(I = \int\limits_2^3 {{{{t^2}} \over {{t^2} + 1}}dt} \)

C \(I = \int\limits_{\sqrt 2 }^{{2 \over {\sqrt 3 }}} {{{{t^2}} \over {{t^2} - 1}}dt} \)

D \(I = \int\limits_2^3 {{t \over {{t^2} + 1}}dt} \)

A n = 3    

B n = 4 

C n = 6

D n = 5

A \(I =  - 16\int\limits_0^{{\pi  \over 4}} {{{\cos }^2}tdt} \)

B \(I = 8\int\limits_0^{{\pi  \over 4}} {\left( {1 + \cos 2t} \right)dt} \)

C \(I = 16\int\limits_0^{{\pi  \over 4}} {{{\sin }^2}tdt} \)       

D \(I = 8\int\limits_0^{{\pi  \over 4}} {\left( {1 - \cos 2t} \right)dt} \)

A \(I = \int\limits_0^{{\pi  \over 6}} {dt} \)  

B \(I = \int\limits_0^{{\pi  \over 6}} {tdt} \)     

C \(I = \int\limits_0^{{\pi  \over 6}} {{{dt} \over t}} \)           

D \(I = \int\limits_0^{{\pi  \over 3}} {dt} \)

A \(\int\limits_a^b {f'\left( x \right){e^{f\left( x \right)}}dx}  = 0\)      

B \(\int\limits_a^b {f'\left( x \right){e^{f\left( x \right)}}dx}  = 1\)

C \(\int\limits_a^b {f'\left( x \right){e^{f\left( x \right)}}dx}  =  - 1\)

D \(\int\limits_a^b {f'\left( x \right){e^{f\left( x \right)}}dx}  = 2\)

A \(a = {1 \over 3}\)

B \(a =  - {1 \over 3}\)

C \(a = 2\)

D \(a = – 2\)

A \(I = {1 \over 2}\int\limits_0^1 {{e^t}\left( {1 - t} \right)dt} \)

B \(I = 2\left[ {\int\limits_0^1 {{e^t}dt}  + \int\limits_0^1 {t{e^t}dt} } \right]\)

C \(I = 2\int\limits_0^1 {{e^t}\left( {1 - t} \right)dt} \)

D \(I = {1 \over 2}\left[ {\int\limits_0^1 {{e^t}dt}  + \int\limits_0^1 {t{e^t}dt} } \right]\)

A \(a = {1 \over 3}\)      

B \(a =  - {1 \over 3}\)

C \(a =  - {2 \over 3}\)

D \(a = {2 \over 3}\)

A \(I = {4 \over 3}\int\limits_1^2 {\left( {2{u^2} + 1} \right)du} \)

B \(I = {4 \over 3}\int\limits_1^2 {\left( {{u^2} + 1} \right)du} \)

C \(I = {4 \over 3}\int\limits_1^2 {\left( {{u^2} - 1} \right)du} \)

D \(I = {4 \over 3}\int\limits_1^2 {\left( {2{u^2} - 1} \right)du} \)

A \(I = {1 \over {n + 1}}\)

B \(I = {1 \over {n - 1}}\)

C \(I = {1 \over {2n}}\)

D \(I = {1 \over n}\)