Question

given the function of f(x)= p-x / 2x-1 is undefined when x=h and p is constant .

a) state the value of h
b) given that 2 is mapped onto 1 through function f. find
i) the values of p
ii) the values if x if f(x) = 2x
iii) the value of f^-1(-1)

Answer 1

its undefined when denominator = 0
that is when h = 1/2

Answer 2

can show me the way?

Answer 3

substitute x = 1/2 into your function
f(x)= p-x / 2x-1
when x = 1/2
f(x) =( p -1/2 ) / ( 2(1/2) - 1 ) =( p - 1/2) / 1 -1 = p - 1/2 / 0

anything divided by 0 is undefined