SAT Subject Test Mathematics Level 2

which is its velocity .

Its speed is

The vector equation that describes the motion of this object is

Now that you’ve had a good look at some typical (and a few unusual) Math 2 functions questions, it’s
time to try a few more on your own. See how well you can do with the questions in the Functions
Follow-Up Test.

THINGS TO REMEMBER:

Functions:  Domain  and Range

Compound    Functions

Maximums    and Minimums

A   function    is  a   set of  ordered pairs   (x,y)   such    that    for each    value   of  x   there   is  one and

only    one value   of  y.

The set of  all allowable   x   values  is  called  the domain.

The corresponding   set of  all y   values  is  called  the range.

f(g(x)) means   apply   g   first   and then    apply   f   to  the result.

g(f(x)) means   apply   f   first   and then    apply   g   to  the result.

f(x)g(x)    means   apply   f   and g   separately  and then    multiply    the results.