if f x is 7x 12 then f-1 x f inverse of x is --- a x-12 7 b 7x

put y=f(x)
y=7x+12
find x in terms of y
x=(y-12)/7
swap x from y...
f^-1(x)=x-12/7.. option (a)
10 years agoHelpfull: Yes(22) No(1)
it is one one function
y=7x+12
(y-12)/7=x
replace y by x to find inverse
(x-12)/7
10 years agoHelpfull: Yes(7) No(0)
the answer is (x-12)/7
10 years agoHelpfull: Yes(2) No(1)
y=7x+12
swap x&y so x=7y+12
y=(x-12)/7
10 years agoHelpfull: Yes(2) No(1)
In order to Find inverse ...it needs to be bijection... clearly f(x) is both one-one and onto...and hence it is a bijection.... let f(x)=y=7x+12...so f-1(x)=(x-12)/7
10 years agoHelpfull: Yes(1) No(0)
f(x) = 7x + 12
y =7x + 12 . ..

x = 7y + 12
7y = x -12
y =(1/7)*x - 12/7

hence, f^-1(x) = (x - 12)/7 . . .answer
9 years agoHelpfull: Yes(1) No(1)
option c is correct.
10 years agoHelpfull: Yes(0) No(13)
(x-12)/7
put y in x and get the ans
10 years agoHelpfull: Yes(0) No(1)
a.(x-12)/7
put x on y
10 years agoHelpfull: Yes(0) No(1)
option : A
10 years agoHelpfull: Yes(0) No(1)
a. (x-12)/7
10 years agoHelpfull: Yes(0) No(1)
A.
y=f(X)=7x+12 or, x=(y-12)/7 therefore, F(inverse of X)=(x-12)/7
9 Months agoHelpfull: Yes(0) No(0)

if f(x) is 7x+12.then,f-1(x) (f inverse of x)is ---
a. (x-12)/7
b. 7x+12
c. 1/(7x+12)
d. No inverse exists