gaokao 2022 Q8

gaokao · China · national-B-arts 5 marks Curve Sketching Identifying the Correct Graph of a Function

The figure on the right is the approximate graph of one of the following four functions on the interval $[ - 3,3 ]$ . The function is
A. $y = \frac { - x ^ { 3 } + 3 x } { x ^ { 2 } + 1 }$
B. $y = \frac { x ^ { 3 } - x } { x ^ { 2 } + 1 }$
C. $y = \frac { 2 x \cos x } { x ^ { 2 } + 1 }$
D. $y = \frac { 2 \sin x } { x ^ { 2 } + 1 }$

The figure on the right is the approximate graph of one of the following four functions on the interval $[ - 3,3 ]$ . The function is

A. $y = \frac { - x ^ { 3 } + 3 x } { x ^ { 2 } + 1 }$

B. $y = \frac { x ^ { 3 } - x } { x ^ { 2 } + 1 }$

C. $y = \frac { 2 x \cos x } { x ^ { 2 } + 1 }$

D. $y = \frac { 2 \sin x } { x ^ { 2 } + 1 }$

Paper Questions

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