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(-1,-1) (1,-1) (-1,1) (1,1)
(-3,-3) (-3,3) (-1,3) (1,-3)
(2,﹣1) (1,﹣2) (﹣2,1) (﹣2,﹣1)
(2,﹣1) (1,﹣2) (﹣2,1) (﹣2,﹣1)
) (3,7) ( ) (-3,-7) ( ) (-3,7) ( ) (2,-7)
(2,﹣1) (1,﹣2) (﹣2,1) (﹣2,﹣1)
(2,﹣1) (1,﹣2) (﹣2,1) (﹣2,﹣1)
(﹣1,﹣1) (1,﹣1) (﹣1,1) (1,1)
偶函数的图象一定与y轴相交 若奇函数y=f(x)在x=0处有定义,则f(0)=0 奇函数y=f(x)的图象一定过原点 图象过原点的奇函数必是单调函数
) (3,7) ( ) (-3,-7) ( ) (-3,7) ( ) (2,-7)
(1,-1) (-1,1) (-1,-1) (1,1)
(2,﹣1) (1,﹣2) (﹣2,1) (﹣2,﹣1)
(2,-1) (1,-2) (-2,1) (-2,-1)
(2,—1) (1,—2) (—2,1) (—2,—1)
(1,3) (3,1) (1,-3) (-1,-3)
(﹣1,﹣1) (1,﹣1) (﹣1,1) (1,1)