x^2 + exp(3 x) = 5
, and press Enter.
Click on the X after Solve for to
change the variable name,
if necessary, to whatever letter you wish to use.
On the third line you can specify an interval in which to look for the
solution. Finally, click on Go. X = ... (or whatever
letter you are using for the variable) shows the value of the variable
that the
applet found (if it found one). F = ... shows the difference
between left and right sides of your equation for that value of X.
This should be close to 0. Note that numbers are sometimes written
in "scientific notation", e.g. 1.234E-12 means 1.234 x 10-12.
F' = ... shows the derivative of the difference of the two sides
at that value of X.