Question

Given that f(x) = 2x + 1 and g(x) = 3X-1/2 solve for g(f(3)).

Answer 1

f(3)=put x=3 in f(x)
then f(3)=ans then put ans in g(x)=g(ans of f(3))= u ans

Answer 2

That doesnt make much sense to me at all @Er.Mohd.AMIR

Answer 3

f(x)=2(3)+1=6+1=7
now find g(7) put x=7 in g(x)

Answer 4

So the answer would be seven

Answer 5

so for you can getting f(3) you need substituting the 3 in place of x and in case of f(x) and this value of f(3) you need substituting in place of x in case of g(x)

ok ?

Answer 6

This is just one form of math that I have completely no idea on how to do it...

Answer 7

I got the answer 7. I think..

Answer 8

@jhonyy9

Answer 9

no ans is not 7 put 7 in place of x in g(x) and solve

Answer 10

g(f(x))=g(7)=3*7-1/2=21-1/2=41/2=answer

Answer 11

so 7 is just f(3) =7 but you need to calculi g(f(3) = ?
yes ?

Answer 12

x=5

Answer 13

so because f(3)=7 so than you need substituting 7 in place of x in case of g(x)

ok ?

Answer 14

Okay, Whenever I substituted 7, I got x=5

Answer 15

3x - 1
g(x) = ------
2

hence is right ?

Answer 16

Yes

Answer 17

so this mean that 5 is correct answer - yes ?

Answer 18

I believe so lol

Answer 19

so do you understand it now why is this way to solve this exercise ?

Answer 20

Yes I understand it now, for the most part :) thank you very much

Answer 21

was my pleasure

good luck