Question

The zero of F-1(x) in F(x) = x + 3 is


A.) -3
B.) 0
C.) 3

Answer 1

x+3 = 0 , x=-3

is this what we have to do @hartnn ?

Answer 2

zero of F-1(x) means to equate F-1(x) =0
so what is F(0) = ?
just put x=0 in F(x)

Answer 3

Can you please work it out without giving the answer? Im still a bit confused.

Answer 4

ok,
to get zeros of F-1(x)
Equating F-1(x) =0
so, F(0) = 0+3 (put x=0 in F(x))
= ?
hence zeros of F-1 (x) = ?

Answer 5

3

Answer 6

yup

Answer 7

Thanks, I think I get it now!!

Answer 8

welcome ^_^
you can also actually calculate F-1 (x) (let it be y)
y=x+3
interchange x and y
x=y+3
y=x-3
s0 F-1(x) = x-3
to get zeros, put F-1(x)=0
x-3=0
x=3

Answer 9

Ok thanks...this way seems easier!!!