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8. Find an equation of the tangent line to the curve f(x) = x2 - 10 passing through the point (5, 1). a) y - 1= -10(x - 5) b) y +5 = -10(x + 1) c) y + 1 = 10(x +5) d) y - 1 = 10(x - 5) e) y - 5 = 10(x - 1) 9. Find the slope of the tangent to the graph f(x) = - sin x cos 2x where X = -. a) N / w b) 2v3 () 3 d) V3 e) 3V3 10. Find f'(x) for f(x) = (2x2 +5)7. a) 7(4x)6 b) (4x) 7 c) 28x(2x2 + 5)6 d) 7(2x2 + 5)6 e) 28x 11. Find - for y = x3 2x + 1 a) X-(7x + 3) 3x2 b) 8x3 + 3x2 V2x + 1 2V2x + 1 d) 8x + 3 2V2x4 +x3 e) 6x3 + 3 V2x + 1 V2x + 1 12. If y = (3x2 + 5)5(x+ 2)#, then x dy a) 2(x + 2)3(3x2 + 5)+ b) 2(2 1x2 + 30x + 10)(x + 2)3(3x2 + 5)4 c) (x + 2)3(3x2 + 5)(21x2 + 30x+ 10) d) 24(x +2)3(3x2 + 5)4(21x2 + 30x +10) e) 12(x + 2)3(3x2 + 5)*(21x+30) 13. Find the derivative of y = cosx3. a) 3x2 sin x3 b) 3 cos x3 c) -3x2 sin x3 d) 3 sinx' cos2x3 e) 3xcosx2 14. Find f (x) given f(x) = sin3(4x). a) 4 cos' (4x) b) 3 sin 4x cos(4x) C) cos$ 4x d) 12 sin' 4x cos(4x) e) 12 cos2(4x)