rozwiarz nierównosci.
a)3x/2-1>x/4
b)x/3-3x/5\geq -1
c)x-9/4-2(3x-1)\geq 0
d)3x-1/2-2x+1/5\leq x+1/10
e)2x-x-1/4<3x-1/2+x
f)2x+1/4-x\geq 1-x/2
/ ułamek
\geq-wieksze lub równe
\leq-mniejsze lub równe
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a)
3x/2-1>x/4 /*4
6x-4>x
5x>4 /:5
x>5/4
b)
x/3-3x/5 \geq -1 /*15
5x - 9x \geq -15
-4x \geq -15 /: (-4)
x \geq 15/4
c)
x-9/4-2(3x-1) \geq 0
x-9/4-6x+2 \geq 0
-5x \geq 1/4 /: (-5)
x \geq 1/20
d)
3x-1/2-2x+1/5 \leq x+1/10
x-3/10 \leq x+1/10
0 \leq 4/10
e)
2x-x-1/4 < 3x-1/2+x
x-1/4 < 2x-1/2
-x < -1/4 /: (-1)
x < 1/4
f)
2x+1/4-x \geq 1-x/2 /*2
4x+1/2-2x \geq 2-x
2x+1/2 \geq 2-x
3x \geq 1,5 /:3
x \geq 0.5
Liczę na Naj!!! :)
Pozdrawiam SheaThor