Question

Given that f(x) : 4x+m and f^-1(x) : nx+3/4, find the values of m and n. Help me T.T

Answer 1

f(x)=4x+m
inverse of f(x)=nx+3/4, f(x)= (x-3/4)/n

Answer 2

i dont get it

Answer 3

f(x)=x/n-3/4n
x/n=4x, n=1/4
-3/4n= -3=m

Answer 4

tutor give true answer. tat is invers function so if u want to know more this is the link : sorry bukan jebakan betmen lo. http://en.wikipedia.org/wiki/Inverse_function

Answer 5

f(x)= y if and only if g(y) = x

Answer 6

how can he gets f(x)=x/n-3/4n?

Answer 7

g(y)= x
y = nx+3/4 ------ y/n-3/4 n = x
so attach the x into f(x) = y
f(x) = 4 (y/n-3/4n) + m =0

Answer 8

well value x =1
4y/n-3n + m =0
4/n-3n+m=0
n= 4/3 and m = 8/3

Answer 9

okay thanks! finally i got it ^^ thanks noras and tutordiffeq