Write a matlab script using the quiver and contour commands to visualize the field and its divergence. assume the region of interest to be -20-20\leqslant x\leqslant20 ,-40\leqslant y\leqslant 40.
hint: mesh the 2d space as
gx=-20: 1: 20;
gy=-40: 1: 40

Write a select statement that returns product name, customer first name, customer last name, channel description, and amount sold for all the sales. make sure to returns sales even if there is no information on the customer, product, or channe

Develop a function to create a document in the mongodb database “city” in the collection “inspections.” be sure it can handle error conditions gracefully. a. input -> argument to function will be set of key/value pairs in the data type acceptable to the mongodb driver insert api call b. return -> true if successful insert else false (require a screenshot)

Which text format is this, "the text is transcribed exactly as it sounds and includes all the utterances of the speakers. "?