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a+1=b+1 a+5=b-5 -a=-b a-b=0
AC>BC C-A>C-B A+C>B+C A/C>B/C
ac>bc a2>b2 a+c>b+c
-x>-y a2x>a2y -x+a<-y+a x>-y
ac>bc a2>b2 a+c>b+c
P(A+B)=P(A) P(AB)=P(A) P(B A)=P(B) P(B-A)=P(B)-P(A)
b=atanA b=csinA a=ccosB c=asinA
a+1=b+1 a+5=b﹣5 ﹣a=﹣b a﹣b=0
a+3<b+3 a-3<b-3 3 a<3b -3 a<-3b
x+4>y+4 x﹣5<y﹣5 6x>6y ﹣3x<﹣3y
∣-5∣=-5 -∣-5∣= 5 -(-5)=- 5 -(-5)= 5
W=Ult W=I2Rt W=U2t/R W=UI
R-S=R-(R∩S) R=(R-S)∪(R∩S) R∩S=S-(S-R) R∩S=S-(R-S)
R-S=R-(R∩S) R=(R-S)∪(R∩S) R∩S=S-(S-R) R∩S=S-(R-S)
AC⊥BD AB=CD BO=OD ∠BAD=∠BCD
P(A+B)=P(A) P(AB)=P(A) P(B A)=P(B) P(B-A)=P(B)-P(A)
R-S=R-(R∩) R=(R-∪(R∩) R∩S=S-(S-) R∩S=S-(R-)
R-S=R-(R∩S) R=(R-S)∪(R∩S) R∩S=S-(S-R) R∩S=S-(R-S)