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EX1<EX2. EX1=EX2. EX1>EX2. 以上结论都不对.
(0,1),(1,2) (0,1),(1,2) y=1或y=2 y y≥1
cosy=(1+ex) cosy=(1+ex) cosy=4(1+ex) cos2y=(1+ex)
cosy=(1+ex)/4 cosy=1+ex cosy=4(1+ex) cos2y=1+ex
ex﹣y=0 (1﹣e)x+y﹣1=0 2ex﹣y﹣e=0 (1+e)x﹣y﹣1=0
y″-2y′-3y=0 y″+2y′-3y=0 y″-3y′+2y=0 y″+2y′+y=0
2ex+y+e=0 2ex﹣y﹣e=0 2ex+y﹣3e=0 2ex﹣y+3e=0
(0,1] (0,1) (-∞,1] (-∞,1)
N(0,1) N(0,5) N(0,3) N(-l,1)
PX+Y≤0=1/2 PX+Y≤1=1/2 PX-Y≤0=1/2 PX-Y≤1=1/2
(1+e)x-y=0 ex-y+1=0 (1+e)x+y-2(1+e)=0 x-(1+e)y=0