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1 2 3 4 5 6 7 8 9 Calculus 1 Worksheet #14 Derivative Review f ( a + h) − f ( a ) For #1 and 2, use the definition f '(a) = lim to find derivative of the given function at the h →0 h indicated point. −9 9 11 121 9 A) B) C) D) f(x)= ,a =-11 x 11 9 9 121 f(x)=x3+6, a=2 A) -12 B) 13 C) 18 D) 12 For #3-6, find the slope of the line tangent to the curve at the given value of x. y = x2-9x; x=-5 A) 70 B) -10 C) -19 D) 35 2 If y=x +3, find the equation of the tangent line to the graph of y at x=4. A) y=8x-13 B) y=8x-29 C) y=4x-13 D) y=8x-26 2 Find an equation of the tangent line to the graph of y=x-x at the point (-2, -6). A) y=-3x-4 B) y=5x+4 C) y=-3x+4 D) y=-5x+4 2 Find the equation of the normal line to the curve of y=3x-5x at the point (-3,-54). A) x-27y+975 =0 B)x+33y+1785=0 C)x-27y+1785=0 D)x+33y+975=0 For #7 and 8, solve the problem. dy if y=24-3x. Find dx dy dy dy dy A) =24-3x B) =-3x C) =-3 D) =21 dx dx dx dx d 2 (x -1). Find dx A) x-1 B)2x-1 C)2x D)2x2 dy . For #9-18, find dx 1 y= 7 − 4x A) − 2 7 − 4x 10 y= 19x − x 7 19 − 7 x 6 A) 2 19 x − x 7 11 y=(3x-4)(5x+1) A) 15x-17 12 y=(6x+3)2 A) 72x+36 13 y=3x4+2x3-8 A) 12x3+6x2 14 1 1 y= x8 − x 4 2 4 A) 4x8-x4 1 B) − 2(7 − 4 x) B) 1 2 19x − x 7 3 2 C) C) 7 − 4x 2 D) 3 2(7 − 4 x) 2 −7 x 6 2 19 x − x 1 7 D) 1 2 19 − 7x 6 B) 30x-23 C) 30x-17 D) 30x-8.5 B) 36x+9 C) 36x+18 D) 12x+6 B) 4x3+3x2 C) 12x3+6x2-7 D) 4x3+3x2-7 B) 4x7-x3 C) 1 7 1 3 x − x 2 4 D) 4x9-x5 15 16 17 18 19 20 Calculus 1 Worksheet #14 Derivative Review 7x + 3 6x − 2 84 x + 4 A) 6x − 2 y= B) − 32 (6 x − 2) 2 C) − x2 6 − 8x −24 x 2 + 12 x 8 x 3 − 16 x 2 + 12 x A) B) (6 − 8 x) 2 (6 − 8 x) 2 y=10x-2+8x3-6x A) 20x-3+24x2 B) -20x-1+24x2-6 x −8 y= x +8 16 8 B) A) x ( x + 8) 2 ( x + 8) x − 64 Find the fourth derivative of the function. y= 6x5-5x2-6x+1 A) 720 B) 480x2+10 Determine the limit by substitution. lim( x 3 + 5 x 2 − 7 x + 1) 32 x (6 x − 2) 2 D) 4 6x − 2 D) −8 x 2 + 12 x (6 − 8 x) 2 y= C) 6x (6 − 8 x) 2 C) -20x-1+24x2 C) − D) -20x-3+24x2-6 8 x ( x + 8) 2 D) C) 480x+10 8 x +8 D) 360x x →2 A) 15 B)Does not exists 21 Determine the limit algebraically if it exists. lim x − 3 C) 0 D) 29 A) 1 B)Does not exists 22 Determine the limit algebraically if it exists. x2 − 4 lim x →−2 x + 2 A) -4 B) 1 C) -1 D) 0 C) -2 D) Does not exists x →2 Answers: 1 D 2 D 12 A 13 A 3 C 14 B 4 A 15 B 5 B 16 D 6 B 17 D 7 C 18 B 8 C 19 A 9 D 20 A 10 A 21 B 11 C 22 A