Zadanie 1a
State a.
- Materiał graficzny
Zadania wzorowane na pytaniach z tego arkusza: te same umiejętności, format i punktacja, inne dane i kontekst. Treści arkusza IB nie publikujemy.
W bazie 22 zadania z tego arkusza, razem 80 punktów, każde z kluczem i schematem punktowania.
State a.
(i) State the period. (ii) Hence find b.
Find f(π/12).
Write an expression for (g∘f)(x).
Given (g∘f)(1) = 25, find all possible k.
Find P(A∪B).
Hence or otherwise find P(A′∩B′).
Find p and q.
Find the fifth term.
In parallelogram ABCD, AB=12 cm, AD= cm and . Find its exact area.
The expansion of (1 + kx)n begins 1 + 15x + 45k2x2 + ⋯ + knxn, with positive integer n and rational k. Find n and k.
(i) Find p. (ii) State the modal class.
Use the cumulative graph to estimate (i) the median daily count; (ii) the number of days when at least 80% of capacity was used.
(i) Give one disadvantage of inspecting only the first 10% of arrivals. (ii) Describe systematic sampling of 10% of arrivals. (iii) Name a method that sets sample numbers to match the known proportions of refrigerated and ambient specimens.
The box plot summarizes processing times for the 20000 specimens. (i) Estimate how many took between 4 and 28 minutes. (ii) Half took less than a minutes; estimate a.
For the next 50-day cycle, capacity is expanded to 612. The model adds 12 specimens to each daily count. (i) Find the new mean daily count. (ii) State the effect on the variance.
State the vertical asymptote of g.
(i) Show that intersection abscissas satisfy x2 − 3dx + 6d = 0. (ii) Hence show that 9d2 − 24d > 0. (iii) Find the possible values of d.
For d=4, find q−p in simplest surd form. Intersection abscissas satisfy x2 − 3dx + 6d = 0.
Show that f′(x) = 24(2 − 5x2)/(x2 + 2)4.
Find .
Find the two possible expressions for g.
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