Zadanie 1
The curve y = h(x) is defined for real x by . Its local minimum is M(a, b), with a > 1. Find a and b.
Differentiate sums of integer powers with coefficients and express the resulting gradient function correctly.
Tę umiejętność sprawdza 7 zadań wzorowanych na arkuszach IB z lat 2022–2025.
The curve y = h(x) is defined for real x by . Its local minimum is M(a, b), with a > 1. Find a and b.
(i) Find GM′(t). (ii) Hence show that GM′(1) = E(M).
For the straight-line family f(x) = c − dx, with real constants c, d, show that curvature is zero everywhere.
Find dV/dr under the surface-area constraint.
For a<0, show that the stationary points are P = (0, b) and .
Let F(x) = x + x3 + x5 + ⋯ + x2n−1. Show that .
Define and Fq(x) = xFq−1′(x) for q≥1. (i) Show that . (ii) Prove by induction on q that for q≥1. (iii) Write F_q(1) in sigma notation.
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