<html><head></head><body><div class="ydp258b5bbbyahoo-style-wrap" style="font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;">Hello I have a problem, I would like <span>convert from string to ex to find the symbolic derivative</span></div><div class="ydp258b5bbbyahoo-style-wrap" style="font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;">is it posible?</div><div class="ydp258b5bbbyahoo-style-wrap" style="font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;"><span>void chequeaPrim(vector<string> ramaPrim)<br>{<br> for(int i=0; i< ramaPrim.size();i++)<br> {<br> ex = ramaPrim[i];<br> }<br></span><div><span>}<br></span></div><div><br></div><div><br></div><div>thanks<br><span></span></div></div></body></html>