Recent content by judefrance

  1. J

    Undergrad How Do You Solve This Differential Equation Without Initial Conditions?

    Thanks THANKS! you save me!
  2. J

    Undergrad How Do You Solve This Differential Equation Without Initial Conditions?

    Maybe this? If I understand, you've made: 1/r*d/dr*(r*de/dr)=0 so: d/dr*(r*de/dr)=0 If i integrate, i find: e(r)=A*ln(r)+B Wrong or not ?
  3. J

    Undergrad How Do You Solve This Differential Equation Without Initial Conditions?

    Yes, but... And, if i want to find the general form of e(r)?
  4. J

    Undergrad How Do You Solve This Differential Equation Without Initial Conditions?

    Help me please! Can you help me to solve this: (d² e(r)/dr²)+(1/r)*(d e(r)/dr)=0 There is no initials conditions, please use general form