Wyznacz najmniejszą wartość funkji f(x)=2x^2+x+1 gdy x∈R.
Xw = -b/2a -1/4
f(-1/4) = 7/8
ta wartość to 7/8
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Xw = -b/2a -1/4
f(-1/4) = 7/8
ta wartość to 7/8