**Solve**** and **
**RootOf**

As you learned in the previous section, sometimes
*solve*
doesn't find a solution. For example, there is no closed-form Maple solution for the equation below. Evaluate the input, and Maple will return just
*"RootOf( same equation )"*
---its way of saying that it couldn't find an explicit solution.

`> `
**solve( exp(x) * sin(x) + x^2 * ln(x) = 1, x);**

`> `

If you don't understand the above notation (what is the _
*Z*
? what does
*RootOf*
mean?), now is an excellent time to ask someone for a crystal-clear explanation.