Zadanie 1a
Read from the graph (i) f(4); (ii) f(f(4)); (iii) f−1(5).
- 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 24 zadania z tego arkusza, razem 80 punktów, każde z kluczem i schematem punktowania.
Read from the graph (i) f(4); (ii) f(f(4)); (iii) f−1(5).
Sketch the graph of y = f−1(x), clearly identifying its intercepts with both axes.
Solve for 0° ≤ x ≤ 120°.
Solve 2m2 + 7m − 4 = 0.
Hence or otherwise, solve 2 ⋅ 16x + 7 ⋅ 4x − 4 = 0 for real x.
(i) Find the midpoint of AC. (ii) Find the Cartesian equation of OB.
Find the exact area enclosed by OABC.
State the probability of no alert from (i) check A; (ii) check B.
(i) Show that 16k2 − 40k + 9 = 0. (ii) The roots of this equation are 1/4 and 9/4. State the valid value of k and justify your choice.
State the equation of the horizontal asymptote of f.
(i) For m > 0, state the number of real solutions of f(x) = g(x). (ii) Find m for which there is exactly one real solution. (iii) Find all m for which there are two distinct solutions and both are nonnegative.
Show that b = π/6.
State (i) a; (ii) c.
For chamber B, (i) find the intensity at t=5; (ii) show that the monitoring threshold is never reached.
It is found that g(t) = (2/3)f(t) + q. Find q.
(i) Show that 2x2 − 8x + 11 > 0 for every real x. (ii) Hence determine where f is increasing.
(i) State where f′(x) = 0. (ii) Show that f′′(x) = (−8x2 + 32x − 20)/(2x2 − 8x + 11)2. (iii) Hence justify that the stationary point is a local minimum.
Find an expression for f(x).
Find the equation of the normal to the curve at x=0.
Show that 2p − q = a.
Show that s2 = at.
Show that p>2.
Suppose a=16 and s>0. List the first four terms of (i) the arithmetic sequence; (ii) the geometric sequence.
Suppose a=16 and s>0, and define un = An + ln Gn. (i) Show that u_n is arithmetic and find its common difference. (ii) Show that .
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