First input argument must be a function handle. A and B must be scalar floats. Contour endpoints and waypoints must be finite. Infinite or Not-a-Number value encountered. Supported classes are ''double'' and ''single''. Output of the function must be the same size as the input. Invalid AbsTol Invalid RelTol MaxIntervalCount must be a positive integer scalar. RelTol was increased to 100*eps(''{0}'') = {1}. Reached the limit on the maximum number of intervals in use. Approximate bound on error is{0}. The integral may not exist, or it may be difficult to approximate numerically. Increase MaxIntervalCount to {1,number,integer} to enable QUADGK to continue for another iteration. Minimum step size reached near x = {0}; singularity possible. Waypoints must be a vector. Waypoints must be finite.