# record 1: header: parent, keywords
# record 2: calling parameters
# record 3: submit buttons
# record 4: html form content

:calculus, implicit
derivative, implicit function, implicit derivative,
derivative implicit, derivative of implicit function

:datatype, function

:operation, Differentiate Implicitly

:
 $submit1
 <input name="formula" type="text" size="40" value="3*x*y = sin(x+y)">
