1. f = (k+1)/(k+a) |*(k+a) fk+fa=k+1 fk-k=1-fa k(f-1)=1-fa |:(f-1) k=(1-fa)/(f-1) 2. g = (2-1)/k |*k gk=2-1 |:g k=(2-1)/g 3. h = ka² + k h=k(a² +1) |:(a² +1) h/(a² +1)=k 4. i = a/2 + 2/k |*k ik=a/2 +2 |*2 2ik=a+4 |:2i k=(a+4)/2i
zad.2
a) t = x/a - 5x//:a ta=x-5xa x-5xa=ta x(1-5a)=ta//:(1-5a) x=ta/1-5a b) p = a + x + ax a+x+ax=p/-a x+ax=p-a x(1+a)=p-a//:(1+a) x=p-a/1+a c) m = (x+1)p - 3x m=px+p-3x px+p-3x=m/-p px-3x=m-p x(p-3)=m-p//:(p-3) x=m-p/p-3 d) w = 1/x + p//*x wx=1+px//-px wx-px=1 x(w-p)=1//:(w-p) x=1/w-p
1.
f = (k+1)/(k+a) |*(k+a)
fk+fa=k+1
fk-k=1-fa
k(f-1)=1-fa |:(f-1)
k=(1-fa)/(f-1)
2.
g = (2-1)/k |*k
gk=2-1 |:g
k=(2-1)/g
3.
h = ka² + k
h=k(a² +1) |:(a² +1)
h/(a² +1)=k
4.
i = a/2 + 2/k |*k
ik=a/2 +2 |*2
2ik=a+4 |:2i
k=(a+4)/2i
zad.2
a)
t = x/a - 5x//:a
ta=x-5xa
x-5xa=ta
x(1-5a)=ta//:(1-5a)
x=ta/1-5a
b)
p = a + x + ax
a+x+ax=p/-a
x+ax=p-a
x(1+a)=p-a//:(1+a)
x=p-a/1+a
c)
m = (x+1)p - 3x
m=px+p-3x
px+p-3x=m/-p
px-3x=m-p
x(p-3)=m-p//:(p-3)
x=m-p/p-3
d)
w = 1/x + p//*x
wx=1+px//-px
wx-px=1
x(w-p)=1//:(w-p)
x=1/w-p