<div style="text-align:left;"><img src="http://thimg.todayhumor.co.kr/upfile/201901/15475825914e4355927de94dcca481d85e2ac84435__mn632981__w320__h270__f4729303__Ym201901__ANIGIF.gif" width="320" height="270" alt="Heart.gif" style="border:none;" filesize="4729303"></div> <div style="text-align:left;"><br></div> <div style="text-align:left;">수식도 함께</div><br><div><iframe width="560" height="315" src="https://www.youtube.com/embed/888GHxpM6SM" frameborder="0"></iframe><br></div> <div><br></div> <div><span style="font-family:sans-serif;font-size:15px;text-align:justify;">x^{\frac{2}{3}}+0.9\cdot\left(3.3-x^2\right)^{\frac{1}{2}}\cdot\ \sin\left(a\cdot\pi\cdot x\right)</span></div>