Treść zadania
Autor: adambarte Dodano: 15.4.2010 (23:17)
http://www.zadania.info/d201/55797
zadania:
1;3;9;12;14;15;21;23;27;29
Najlepiej na jutro!
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jaa_ola 16.4.2010 (00:44)
1d
3a
9a
12a
14b
15d
21->zadanie bardziej na rysowanie....
23
|\Omega|=36\qquad\hbox{moc zbioru omega}
|A|=6 \qquad\hbox{moc zbioru A}
P(A)=\frac{|A|}{|\Omega|}=\frac{1}{6}
24
|x-3|=5
dla x>=0 => x=8
dla x -x+3=5 => x=-2
f(8)=128+8b+c=0
f(-2)=8-2b+c=0
b=-12
c=-32
f(x)=2x^2+-12x-32
29
a=8-r
b=8
c=8+r
a^2+b^2=c^2
po podstawieniu i uproszczeniu wychodzi r=2
a=6, b=8, c=10
P=\frac{1}{2}*6*8=24=\frac{a*b*c}{4*R} \hbox{ (gdzie R - promien okregu opisanego)}
R=\frac{a*b*c}{96}=5
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