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# 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
:<td style="text-align:left">
$submit1
</td><td style="width:100%">
<input name="formula" type="text" size="40" value="3*x*y = sin(x+y)" />