zad 1
= -2n+5
= -2(n+1)+5 = -2n-2+5= -2n+3
- = -2n+3-(-2n+5) = -2n+3+2n-5= -2 ⇒ ciąg malejący
zad 2
(3-2x) = -1 zał x <
3-2x =
3-2x = 2
2x = 1 /:2
x =
zad 3
+ =
zał x ≠ 0, y ≠ -1
= -
=
xa=yx-ay+x-a
xa=x(y+1)-a(y+1)
xa= (x-a)(y+1) /:(x-a)
=y+1
y= -1
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zad 1
= -2n+5
= -2(n+1)+5 = -2n-2+5= -2n+3
- = -2n+3-(-2n+5) = -2n+3+2n-5= -2 ⇒ ciąg malejący
zad 2
(3-2x) = -1 zał x <
3-2x =
3-2x =
3-2x = 2
2x = 1 /:2
x =
zad 3
+ =
zał x ≠ 0, y ≠ -1
= -
=
xa=yx-ay+x-a
xa=x(y+1)-a(y+1)
xa= (x-a)(y+1) /:(x-a)
=y+1
y= -1