Page 108 - Math Grade 12 (Basic)

PROEUS DARA

WUfJtifiJl : ~Ulli5~tHJJrt.n~tMJblit1:lbl51:f1Sg~~ y = ae-kr m~~9~fdn~t2 S

(C-14 )'i:f12filH~rummtHl152ltini:lHUfil'eli5~G~ '1 mfinrunrn tl~nlsmlis (C-14) ~
1 "' "' <:'4 1 I.J "' u
0 C) 0 :1 0 1
5760 m '1 ffissrum 5760 mmlis (C-14) msnndli5'i:f1M r;ssmnnrunru '1
<:'4 Oil u l l I.J "'
~ ~
n. ~nnt't3HUfilGli5u8 k tSfil152 (C-14) ?
"" 1 IJ
2. Hn~ 9fH'tfl'i M2li:i15flrt.fl~ 9fltf12Unn rl S n'i~h fdn'e tll'i15&fl9 r;tfl rums nfl2
<:'4 tl" l)G'l u e.J. u >li I) I.J l) vi
I.J
mffismnmlis (c-14) tsi Mmfis s 3% '1
1 u I.J

tuiJm:
..,
~ ~
n. nt'eHumorum k tsmus (C-14)
"" 1 u
tf:i'i:f1S~i5'e~~tnru~uMJM~tMJrn y = ae-kt ttlrn k dlHLff1Gt11Lfllt2
IJ
fili5S (C-14) a mfissmtit~'e y dli51ffirt.ntsiMm1521Un t = 5760
u I.J "' "'
~ ' ~'ll • .,; 1
tsmnnrunrnw"dnmnHnus (C-14) f:i - a = 0.5a '1
"' u 2
-kt 5760
tf:itfiS y = ae fd'e'ern O.Sa = ae-k ( )
u
5760
fd'e'e rn 0.5 = e -5760k M'e'ern Rn0.5 = Rne- k
u u
M'e~ru -5760k = lnO.s M'e)Jrn k = -ln0.5 = ln2 = 0.00012
5760 5760
.,;
) ?1 0.00012 '1

0 000121
l:?itfiS y = ae-O.OOOI2t fd'e'ern 0.03a = ae- .
u
0 000121
fd'e'e rn 0.03 = e -0.000121 fd'e'eru Rn0.03 = Rne- .
u u
fd'e'e rn R nO .03 = -0.000 12t M'e'ernt= lnO.o3 il§'l t=2922l
u u -0.00012 u