SOLUTION: Suppose that the functions P and Q are defined as follows. p(x)=-x q(x)=-2x^2+1 Find the following. (p○q)(-2)= (q○p)(-2)=

Algebra ->  Expressions-with-variables -> SOLUTION: Suppose that the functions P and Q are defined as follows. p(x)=-x q(x)=-2x^2+1 Find the following. (p○q)(-2)= (q○p)(-2)=      Log On


   

Question 918551: Suppose that the functions P and Q are defined as follows.
p(x)=-x
q(x)=-2x^2+1
Find the following.
(p○q)(-2)=
(q○p)(-2)=
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Suppose that the functions P and Q are defined as follows.
p(x)=-x
q(x)=-2x^2+1
Find the following.
(p○q)(-2)= p[q(-2)] = p[-2(-2)^2+1] = p[-7] = 7
-------------------------
(q○p)(-2)= q[p(-2)] = q[2] = -2(2^2)+1 = 7
===============
Cheers,
Stan H.
----------------