integrals and functions

[wild harbor]

i tried taking f(x) as a mod function and since its given x as +ve

itll just be x

and i integrated from 0 to 3

got 3root3

as ans

which is wrong

the ans is 2root2

[stable belfry]

1. find f(0) in (i) by setting x = 0
2. d/dx both sides of (i), its just a separable differential equation in disguise

[wild harbor]

got it got it just took f(x) as y and got the ans

thanks tho

[stable belfry]

.solved