If y=lnx, (dy/dx)=1/x. (Simple Proof, No Limits Required) Oct 3, 2017 20:06:47 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Tiago on Oct 3, 2017 20:06:47 GMT If y=lnx, (dy/dx)=1/x. (Simple Proof, No Limits Required)