Let t be time in seconds. The velocity function (in metres per second) is given by ()=22v(t)=2t2 for an elephant walking along a line. The distance travelled by this elephant during the time interval [0,5] is

Select one:

a.

15 metres

b.

-15 seconds

c.

12 seconds

d.

-17 seconds

e.

-15 metres

f.

17 metres

-------

If 556=1/255t6dt=u1/2du, then u must be equal to

Select one:

a.

6t6

b.

5+65t+6

c.

565t6

d.

+6t+6

e.

+6x+6

f.

6x6

--------------

If()f(x) is a continuous function on [,][a,b], then ()=0bbf(x)dx=0.

Select one:

True

False

-------------------

If (sin())3cos()=3(sin())3cos()d=u3du, then u must be equal to

Select one:

a.

cos()cos(t)

b.

sin()sin()

c.

sin()sin()

d.

cos()cos()

e.

cos()cos(t)

f.

cos()cos()

--------------------

The density in a rod 15m long is determined by1/1x+1 kg/m where x is measured in metres from one end of the rod. Given this, the average density of the rod is

a.

6m

b.

6kg

c.

6 kg/m

d.

2525m

e.

2525kg

f.

66 kg/m

g.

2525kg/m

----------------

Letx and y be real numbers. If xy, then 22x2y2 .

Select one:

True

False