Zamień ułamek okresowy na zwykły ;)
a) 0,(3)
x=0,(3)
10x = .............
- x =0,333333333...
________________________
9x =..................
x =......................
x=.................
b) 0,(15)
y=0,(15)
100y=
- y =0,15151515...
____________________
...y = .............
y=...........
y=...........
c)0,1(5)
x=0,1(5)
100x=..................
-10x = .....................
________________________
90x=.................
x=.......................
x=.........................
d)3,1(21)
y=
....y=
- y=
____________________
....y=
y=................
y=..........
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a) 0,(3)
x=0,(3)
10x =10 razy 0,3
- x =0,333333333...
________________________
9x = 9 razy 0,3 ..................
x = 0,27......................
x=.................
b) 0,(15)
y=0,(15)
100y= 100 razy 0,(15)
- y =0,15151515...
____________________
...y = .............
y=...........
y=...........
c)0,1(5)
x=0,1(5)
100x=100 razy 0,1(5)..................
-10x = -0,0155555 .....................
________________________
90x= 90 razy 0,1(5).................
x= 0,944444.......................
x=0,9(4).........................
d)3,1(21)
y=
....y=
- y=
____________________
....y=
y=................
y=..........
napisałam tyle co wiem , ale to raczej nie jest dobrze. ; /
sorki, jak jest źle.