# Find f from this information f'(x)=ax+b, f(2)=0

#### ggcflo

1. The problem statement, all variables and given/known data

find f from this information f'(x)=ax+b, f(2)=0

2. Relevant equations

3. The attempt at a solution

if you integrate f'(x) treating a and b as constants you get f(x)= ax^2/2 + bx
and if you substitute f(2) you get 2a+2b. thats all i could get... dont know how you could use f(2)=0 in this problem :( help please.

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#### Office_Shredder

Staff Emeritus
Science Advisor
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if you integrate f'(x) treating a and b as constants you get f(x)= ax^2/2 + bx
You forgot the constant of integration

If this is the whole problem, they don't give you enough information to fully solve for a single f(x) so there will be more than one right answer

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