Multiple Choice: [10 Marks] 1. Derivative of f (x) = cos2x a) 2cosx b) sin x c) cosx(sinx) d) -2sinx(cosx) 2. Derivative of f (x) = 7e-4x a) 7e-4x b) - 4e- 4x c) -28e-28x d) -28e-4x 3. Find the slope of the tangent at x = 1 for y = In(2x + 3) a) 2 UI IN d) In(5) 4. Given f (x) = sin (2x) find the slope at ( 2, 1 ) a) -V3 b ) V3 c ) V3 2 d) 0.1395 5. For y = -In(x), find the value of x where the slope is a) X= - 6 b) -In(6) d) Does Not Exist 6. Find y" give y = 73x a) 213x In(7) b) 63 3x In(3) c) 3(73x) In(3) d) 9(73x)(In7)2 7. If f (x) = - find f'(-1) a) e b) 2e c) 0 d) 8. Given f (x) = sin (4x + " ), find f' ("). a) 0 6) 4 c) -4 d) 1 9. The derivative of y = Vex is: a) Vex b) - C) 1 2Vex d) = Vex 10. The derivative of y = 3e*cosx a) 3e*sinx b) 3ex(cosx)(sinx) c) 3e*(cosx - sinx) d) 3e*cosx + 3e*sinx