Odpowiedzi

2010-03-29T20:45:57+02:00
A) a=xk+yk
xk + yk = a
k (x + y) = a /: (x + y)
k = a : (x + y)

b) b=2k-ak
2k - ak = b
k (2 - a) = b /: (2 - a)
k = b : (2 - a)

c) c=(k+1)b+2k
(k + 1)b + 2k = c
bk + b + 2k = c
bk + 2k = c - b
k (b + 2) = c - b /: (b + 2)
k = (c - b) : (b + 2)
2 5 2
2010-03-29T20:47:25+02:00
A) a=xk+yk
a=k(x+y)
k=a/(x+y)

b) b=2k-ak
b=k(2-a)
k=b/(2-a)

c) c=(k+1)b+2k
c=kb+b+2k
c=k(b+2)+b
k(b+2)=c-b
k=(c-b)/(b+2)
3 4 3