Odpowiedzi

2009-12-05T19:38:29+01:00
Zad 9 .
a) 12-4√3+2√3-2= 10-2√3
b) 7-3=4
c) 9-12√6+24=33-12√6
d) 1-2√5/√5+3 * √5-3/√5-3= √5-3-10+6√5/ 5-9=7√5-13/-4

zad 10 .
m+n= 3+√5+1-2√5=4-√5
n-m= 1-2√5- (3+√5)=1-2√5-3-√5=-3√5-2
m/n= 3+√5/1-2√5 = 3+√5/1-2√5 * 1+2√5/1+2√5 = 3+6√5+√5+10 / 1-20=7√5+13/-19
m² / 2n-m = (3+√5)² / 2(1-2√5) - ( 3+√5) = 9+6√5+5 / 2-4√5-3-√5=
14+6√5 / -5√5-1


zad 7
a) A u B ={1,2,3,4,5,7,8,9,12}
A czesc wspolna B = {3,5}
A/B={1,2,4,8}
B/A= {7,9,12}
b) A u B =<5,∞) u {2,4}
A czesc wspolna B = {6,8,9}
A/B= {2,4}
B/A=<5,∞)\ {6,8,9}
c) A u B = <-2,8>
A czesc wspolna B =<3,7>
A/B=<-2,3>
B/A=<7,8>