<div dir="ltr"><div class="gmail_extra" style>Dear all,</div><div class="gmail_extra" style><br></div><div class="gmail_extra" style>I kept getting the error message:</div><div class="gmail_extra" style><br></div><div class="gmail_extra" style>
Attempting to take the derivative of sqrt(prevariable x) at x=0<br></div><div class="gmail_extra" style><br></div><div class="gmail_extra" style>after 30-40 iterations using ADMB. I tried different starting values and etc. Nothing helped. Could you help providing some suggestions on this problem?</div>
<div class="gmail_extra" style><br></div><div class="gmail_extra" style>Hai</div></div>