ag-gipp/GoUldI

Syntax::tsntxi: 
    d                1
   "-- (log  x)  ----, c > 0, c ≠ 1" is incomplete; more input is needed.
    dx     c        xlnc

ToExpression::esntx: 
   Could not parse  \frac{d}{dx}\left( \log_c x\right) = {1 \over x \ln c} ,
     \qquad c > 0, c \ne 1 as input.

<math 
  xmlns='http://www.w3.org/1998/Math/MathML'>
  <semantics>
    <mi>$Failed</mi>
    <annotation-xml encoding='MathML-Content'>
      <ci>$Failed</ci>
    </annotation-xml>
  </semantics>
</math>