У вашего броузера проблема в совместимости с HTML5
Example problems solved:
Derivatives using limits (difference quotient or definition of the derivative)
Graphing the derivative of a function
Power rule
Derivative of cosine and sine
Increasing and decreasing intervals
Local extrema (max and min)
Tangent line approximations
PDF: https://drive.google.com/open?id=1CZUwTPeUEMJIyrxyRSQOLl2TXwHK1ubA