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AC>BC C-A>C-B A+C>B+C A/C>B/C
cbac>ab cb>ab c+b>a+b
={0,1},则下列式子错误的是( ) A.0∈A. {1}∈A. ∅⊆A. {0,1}⊆A.
cbac>ab cb>ab c+b>a+b
-x>-y a2x>a2y -x+a<-y+a x>-y
b=atanA b=csinA a=ccosB c=asinA
a+3<b+3 a-3<b-3 3 a<3b -3 a<-3b
4a<4b -4a<-4b a+4<b+4 a-4<b-4
a+3>b+3 3﹣a>3﹣b a﹣3>b﹣3 ﹣3a<﹣3b
﹣|﹣5|>4 ﹣3<|﹣3| ﹣|﹣4|=4 |﹣5.5|<5
∣-5∣=-5 -∣-5∣= 5 -(-5)=- 5 -(-5)= 5
x﹣3>y﹣3 > x+3>y+3 ﹣3x>﹣3y
1MPa=1000000Pa 1MPa=1000atm 1MPa=9.869atm(标准大气压) 1MPA=10.19atm(工程大气压)
P(A=PP P(A+=P+P-P(A P+P=1 P(A/=P[P≠0]