Question 1143840
.
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The figure at k = 0.25



    {{{graph( 330, 330, -3, 3, -2, 3,
          x^2-0.25, x^4
)}}}

    Plots y = {{{x^2-0.25}}} (red)  and  y = {{{x^4}}} (green).



"It is better one time to see than 100 times to hear" (a proverb).
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