Input must be a function handle or symbolic function. Invalid parameter name and value pairs. Invalid parameter ''{0}''. Markers not supported. Function must map scalar input to scalar output Function behaves unexpectedly on array inputs. To improve performance, properly vectorize your function to return an output with the same size and shape as the input arguments. Range value must be an increasing real finite 2 element row vector. fplot will not accept character vector or string inputs in a future release. Use fplot({0}) instead. Having two output arguments for fplot will be removed in a future release. Use the XData and YData properties instead. The tolerance parameter input to fplot has been removed. Too many functions. Input must be a function or functions of a single variable.