Changes

<div style="font-size:30px">'''IMREAL(z)'''</div><br/>

<div style="font-size:30px">'''IMREAL(z)'''</div><br/>

*<math>>z</math is the complex number is of the form <math>x+iy</math>

*<math>>z</math> is the complex number is of the form <math>x+iy</math>