Functions help...

Tyrese099

New member
Joined
Jan 14, 2020
Messages
1
Can anyone throw some light to this for me...

fx) = x-3/2x
Solve for f(x+1) - f(2x) = 0.5
 

MarkFL

Super Moderator
Staff member
Joined
Nov 24, 2012
Messages
2,411
Hello and welcome to FMH! :)

I've moved and re-titled the thread since this problem has nothing to do with calculus/differential equations. Which of the following is correct?

\(\displaystyle f(x)=\frac{x-3}{2x}\)

\(\displaystyle f(x)=x-\frac{3}{2x}\)

\(\displaystyle f(x)=x-\frac{3}{2}x\)
 

Jomo

Elite Member
Joined
Dec 30, 2014
Messages
5,108
Can anyone throw some light to this for me...

fx) = x-3/2x
Solve for f(x+1) - f(2x) = 0.5
1st you need to tell us which of the functions MarkFL stated is correct. Then replace x with (x+1), then replace x with (2x), then subtract, then set this result equal to 0.5 and finally solve for x.
 
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