Zadanie 11e
Find all k for which |f(x)|=k has four real solutions.
Analyse absolute-value, reciprocal, squared and combined-input transformations and solve related modulus conditions.
Tę umiejętność sprawdza 14 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Find all k for which |f(x)|=k has four real solutions.
Find the vertical asymptotes of y=1/g(x).
For a=−3 and b=1: (i) sketch y = f(∣x∣), marking all asymptote equations, its vertical-axis intercept, and all local extrema; (ii) solve f(∣x∣) < f(x).
Sketch y = ∣f(x)∣, showing the asymptotic behaviour clearly.
Sketch y = 24/f(x), indicating its asymptote and intersections with the coordinate axes.
On separate labelled axes sketch (i) y=f(|x|); (ii) y=|f(x)|. Show intercepts and turning points.
Solve ∣f(x)∣ ≥ [f(x)]2. Give exact interval endpoints.
Sketch y = ∣f(∣x∣)∣ on [−5,5].
Sketch g, labelling all intercepts and the horizontal asymptote.
Find all real k for which (g(x))²=k has exactly two solutions.
Find all x such that h(x) ≤ 0.
Solve 0 < (3∣x∣ − 2)/(∣x∣ + 2) < 3.
Sketch y = ∣f(x)∣, labelling intercepts and all points whose x-coordinate satisfies f′(x) = 0.
Hence or otherwise solve ∣f(x)∣ > 1.
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