<div dir="ltr">I am trying to learn Functional Programming and Erlang by practicing problems available online. <div><br></div><div>One question where I don't know about solving it is  </div><div><br></div><div><p style="border:0px;font-family:'Whitney SSm A','Whitney SSm B',verdana,'Lucida Grande',sans-serif;line-height:1.5em;font-size:18px;margin:0px 0px 1em;outline:0px;padding:0px;vertical-align:baseline;word-wrap:break-word;word-break:break-word;color:rgb(57,66,78)">The series expansion of e<span style="border:0px;font-family:inherit;font-style:inherit;font-variant:inherit;line-height:0;font-size:14px;margin:0px;outline:0px;padding:0px;vertical-align:baseline;word-wrap:break-word;word-break:break-word">x</span> is given by:</p><p style="border:0px;font-family:'Whitney SSm A','Whitney SSm B',verdana,'Lucida Grande',sans-serif;line-height:1.5em;font-size:18px;margin:0px 0px 1em;outline:0px;padding:0px;vertical-align:baseline;word-wrap:break-word;word-break:break-word;color:rgb(57,66,78)">1 + x + x<span style="border:0px;font-family:inherit;font-style:inherit;font-variant:inherit;line-height:0;font-size:14px;margin:0px;outline:0px;padding:0px;vertical-align:baseline;word-wrap:break-word;word-break:break-word">2</span>/2! + x<span style="border:0px;font-family:inherit;font-style:inherit;font-variant:inherit;line-height:0;font-size:14px;margin:0px;outline:0px;padding:0px;vertical-align:baseline;word-wrap:break-word;word-break:break-word">3</span>/3! + x<span style="border:0px;font-family:inherit;font-style:inherit;font-variant:inherit;line-height:0;font-size:14px;margin:0px;outline:0px;padding:0px;vertical-align:baseline;word-wrap:break-word;word-break:break-word">4</span>/4! + .......</p><p style="border:0px;font-family:'Whitney SSm A','Whitney SSm B',verdana,'Lucida Grande',sans-serif;line-height:1.5em;font-size:18px;margin:0px 0px 1em;outline:0px;padding:0px;vertical-align:baseline;word-wrap:break-word;word-break:break-word;color:rgb(57,66,78)">Evaluate e^x for given values of x, by using the above expansion for the first 10 terms.</p></div><div><br></div><div>The problem statement could be found <a href="https://www.hackerrank.com/challenges/eval-ex">here</a></div><div><br></div><div>Can someone guide me how this could be achieved in Erlang?</div><div><br></div><div>Thanks a lot</div><div>+ Harit Himanshu</div></div>