Rozwiąż nierówność;
-2x2+6x-9/2<0
-2x^2 + 6x -9/2 < 0
-2x^2 + 6x -4,5 < 0
D(delta) = b^2 -4ac
D = 36-36 = 0
xo = -b/2a
xo = -6/(-4) = 3/2
xo = 1,5
a < 0
ramiona paraboli skierowane w dół
xe R \ {1,5}
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-2x^2 + 6x -9/2 < 0
-2x^2 + 6x -4,5 < 0
D(delta) = b^2 -4ac
D = 36-36 = 0
xo = -b/2a
xo = -6/(-4) = 3/2
xo = 1,5
a < 0
ramiona paraboli skierowane w dół
xe R \ {1,5}