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Milloin suora on paraabelia suurempi?
Milloin suora [math]g(x)=x+1[/math] on paraabelia [math]f(x)=0.5x^2+1[/math] suurempi? ts. sen yläpuolella.
Pirrä suora ja paraabeli. Luo tilanteesta epäyhtälö.