If fz 12 15z evaluate f 6 t Preview f 6 SolutionSolution fx

If f(z) 12 15z, evaluate f (6) t Preview f (6)

Solution

Solution:

f(x)= 12-15x

to calculate f^-1(x)

plug y = 12 -15x and change x and y position

x = 12-15y

y = (12-x)/15

thus

f^-1(x) = (12-x)/5

pugh x = 6

f^-1(6) = (12-6)/5 = 6/5

Answer

2

if f^-1 is exist

then

f(9) = 8

then f^-1(8) = 9

and

if f(-12) = -14

then f^-1(-14) = -12

f(f^-1(-14)) = f (-12) = -14

Answer