<![CDATA[Math Is Fun Forum / Require an explanation??]]>2014-02-12T04:32:46ZFluxBBhttp://www.mathisfunforum.com/viewtopic.php?id=20494<![CDATA[Re: Require an explanation??]]>You may use taylor expansion about t=0 for c) ]]>http://www.mathisfunforum.com/profile.php?id=912222014-02-12T04:32:46Zhttp://www.mathisfunforum.com/viewtopic.php?pid=300846#p300846<![CDATA[Re: Require an explanation??]]>Hi;]]>http://www.mathisfunforum.com/profile.php?id=337902014-02-11T22:23:49Zhttp://www.mathisfunforum.com/viewtopic.php?pid=300836#p300836<![CDATA[Require an explanation??]]>Ok so i have the next exercise.

I didn't had any problems solving a) and b) What about c? Can anyone tell me how to resolve it? I googled it and found out that's Si(x)(whatever that is) and i don't know about what's that since i'm just last grade of high school. Any help?