Question: Topic DERIVATIVE 17 128 . 9 . 10 . 1 . 11. . . 12 1 13 1 . 14 1 15 SOALAN 2/QUESTION 2

Topic DERIVATIVE

17 128 . 9 . 10 . 1 . 11. . . 12 1 13 1 . 14 1 15 SOALAN 2/QUESTION 2 (10 MARKAH/MARKS) H Luas kawasan A dengan enam permukaan dinyatakan seperti berikut: The total area A of all six faces is given by: A = 2xy + 2yz + 2zx Sekiranya ispadunya dinyatakan seperti berikut: If the volume is given by: xyz = 1000 i. Dapatkan persamaan luas kawasan, A di dalam x dan y sahaja. Find equation of total area, A in x and y only. (2 Markah/Marks) ii. Dapatkan titik kritikal bagi persamaan yang diperolehi di dalam soalan (i). Find the critical point of equation in (i). (5 Markah/Marks) iii. Tentukan samaada ianya mempunyai luas kawasan yang maksimum atau minimum. Determine either it has maximum or minimum area. (3 Markah/Marks) WSOALAN 1/QUESTION 1 (10 MARKAH/MARKS) Sebiji bola dilontarkan ke udara. Ketinggian bola tersebut pada sesuatu ketika t dinyatakn seperti berikut: A ball is thrown in the air. Its height at any time t is given by: h = 3+14t - 5t2 Apakah ketinggi maksimum bola tersebut? What is the maximum height

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