Suppose that the functions q and r are defined as follows

Question

Suppose that the functions q and r are defined as follows

 

q(x)=-2x+1

r(x)=-5x-4

 

Find the following

 

(qºr)(1)

(rºq)(1)

                     

Answer 1

q(x) = -2x + 1

r(x) = -5x-4

 

q(r(1)) = ?

r(1) = -5(1)-4 = -9

q(9) = -2(-9) + 1 = 19

 

Follow the same procedure for

r(q(1))

Find q(1) and apply that value

as x in the r(x) function.