Zadanie 8a
Solve f(x)=g(x) on the stated domain.
Solve trigonometric equations over stated intervals, including equations reducible to quadratics, and retain every valid solution.
Tę umiejętność sprawdza 17 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Solve f(x)=g(x) on the stated domain.
The required force is 240 N both for a horizontal pull and when θ = π/3. The force is least when θ=α, with 0 < α < π/2. (i) Show that . (ii) Hence show…
The smaller angle between Lk and the horizontal is π/10. Find all possible k.
During one turn the marker is at least 12.5 cm above the bench for a total of T seconds. Find T.
Show that .
Hence or otherwise solve for 0° ≤ x ≤ 180°.
Hence solve for 0°≤θ≤180°, respecting the domain.
Solve for 0° ≤ x ≤ 120°.
Find the x-coordinates of A and C.
For chamber B, (i) find the intensity at t=5; (ii) show that the monitoring threshold is never reached.
During one complete cycle of chamber A, for how many hours is the temperature below 5.5°C?
Find the first time T≥0 when the two chambers have equal temperatures.
Hence solve the trigonometric equation.
Find the first time when the clearance is 1.9 cm.
An observation time is selected uniformly from 0 to 6 seconds. Find the probability that the clearance exceeds 1.9 cm.
Find the least positive x satisfying .
Find the total time in[0,8] when B’s content increases faster than A’s.
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