Page 6 - Math SL HB Sem 1
P. 6
PITESUMEI) KNOWLE,I)GE
2. REAL NT]NIBER SYSTEM
PROPF]RTIE,S OF ZERO, O
i)0+a:a+0:a
ii)0xa=axQ=0
I
e.g. 0x0=0 - undellnerl ( becausc the division by z-ero cannot be
0
d one)
0 I
--() = undeternr ined
8 0
ITITAL NUMI}ER LINE AND ITS IN'I'I]RVAL
lnequality lnterval lnterval Svmbol Line Craph Types of Interval
a<x<b la,bl closed
q b
a<x<b opened
)",tI
4 b
a<x!b l",tl _ar---+- I lalf -opcned or
qb half-closed
aSx<b Ir'ol o----------- _!!alf-opened or
qr,
half-closed
x <a l-*'rl - Closed at the right
b
x>b - opened
lr,*[ e------
lo
--
L
