1i the graph

a) In which interval(s) is the derivative zero?

b) evaluate

(3)graphically.

c) is ()zero somewhere? Where? Approximate values are ok.

2.Calculate the following by hand

:a) (532)

b)((21))

c) (2ln(2+35)

d)(2sin())

e) '(), when ()=43+5

3.In the following, x represents the linear displacement of a particle at time . For each case, find expressions for velocity, =and acceleration, =22at a time :a)=53702+20(5p)b) =2cos(5)+4sin(10)

4.A sports field consists geometrically of a rectangle, with half-circles at each end of the rectangle. If the circumference of this object has to be 400 m, what is the maximum area of the rectangle in the middle? The circumference of a circle is times the diameter.