There are real numbers a and b for which the function f has the properties that f(x)=a x+b for all real numbers x, and f(b x+a)=x for all real numbers x. What is the value of a+b?
Answer Choices
A. 2
B. -1
C. 0
D. 1
E. -2
There are real numbers a and b for which the function f has the properties that f(x)=a x+b for all real numbers x, and f(b x+a)=x for all real numbers x. What is the value of a+b?
Answer Choices
A. 2
B. -1
C. 0
D. 1
E. -2