If y=ln(f(x)), dy/dx=(f'(x))/(f(x)) proof (PDF) Oct 21, 2017 1:42:03 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Tiago on Oct 21, 2017 1:42:03 GMT If y=ln(f(x)), dy/dx=(f'(x))/(f(x)) proof (PDF)If ylnfx dy_dxfx_fx _ Maths Proofs Videos ....pdf (112.07 KB)