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Calculus Worksheet 1 a) Lim 1. Find the following limits, if they exist: 2x 5 b) Lim x x 4 x 2 3x 4 c) Lim 2 x 3x 2 x 5 3x 5 d) Lim 2 x x 2 x 2 3x e) Lim 3 x 4 x 4x 2 5 f) Lim x 6x 3 4x 3 3x 2 2x g) Lim x0 x h) Lim (6-3x) x2 x 2 16 x4 x3 2 x3 x 9 5x 2 h 3h j) Lim h0 h (a h) 2 a 2 k) Lim h0 h tan 2x l) Lim x0 2x sin 3x m) Lim x0 x 4 n) Lim x2 x 2 i) Lim x2 Exercise 3.1, p51 2. Differentiate the following a) y = 3x3 – 6x + 4 b) c) d) h) y = 4 y = x5 5 i) y = y = 6x1/3 j) y = y = 7x-3/4 3x 2 4x 5 n) y = x 4 55 x 3 (2x 1) 2 o) y = 2x x 1 x 3 k) y = 5 x e) y = 24 p) y = q) y = 4 x3 7 m) y = 4 x f) y = - 3 x 5 l) y = g) y = 6 4 x 3 x 2 7x 12 x x 3 2x 4 3 x2 3. Differentiate a) y = x (3x2 + 2x – 4) b) y = 1 x (2x + 3) 4. a) If x = 2 y 3 , find dx dy Mount Albert Grammar School J.McHardy b) If A = r2, find dA dr and dr dA Mathematics with Calculus- calculus worksheet 1 Page 1 c) If g : y ( y + 1)( y - 1), find gx d) If f (x) = ( x + 1 f x 5. If 2x3 – 21x2 + 72x – 6y = 0, show that x )2 find dx 1 = (x 3)(x 4) dy 6. Given g : x x3 +2x2 -3x + 4 find g(2), g(2), and g (2) 7. Given f : x 1 + 2x + 5x2 + 4x3 where x R. Find the solutions of a) f ' (x) = 0 8. Find d (3y ) a) dy b) f (x) = 0 c) (x) = 0 d) f iv (x) = 0 d (3x 3 ) b) dx 1 d( ) u c) du d) d( v) dv Exercise 3.3, p60 Delta, Exercise 6.5, p73 Nos 1 – 5, 10 – 12, 14 - 18 9. Differentiate using first principles a) y = 3x2 – 4 b) y = x5 10. What feature of the graphs y = 4x3 + 6 and y = 5 + 4x3 means that they have the same derived function. 11. What function would have the derived function given by (x h)2 3(x h) x 2 3x Lim ? h0 h Exercise 3.2, p58 Delta, Exercise 6.5, p74, Nos 6 – 9, 13 Mount Albert Grammar School J.McHardy Mathematics with Calculus- calculus worksheet 1 Page 2