itbpF50.75pt21.75pt6ptex3.wmfCheck the equality arcsin $\left(\vphantom{ \text{\texttt{sin}}\mathit{% \mathtt{\mathit{\,}}}x}\right.$sin42 x$\left.\vphantom{ \text{\texttt{sin}}\mathit{% \mathtt{\mathit{\,}}}x}\right)$ = x

  1. ClickitbpF20.125pt20.125pt2pttext.wmfor, from the Insert menu, choose Math to start mathematics.

  2. Type the function arcsin . Scientific Notebook recognizes the function and displays it in gray on your screen.

  3. ClickitbpF19.8125pt18.9375pt2ptparens.wmf, type sinx, press spacebar, and type =x. The program recognizes and properly displays the function.

  4. From the Maple menu, choose Check Equality. Maple cannot determine whether the equality is true or false and displays this result: arcsin$\left(\vphantom{ \sin x}\right.$sin x$\left.\vphantom{ \sin x}\right)$ = x is undecidable.