Missions and applied mathematics

Firstly, there are no words capable of expressing my gratitude for the content of the site. If I graduate one day, it will be thanks to Khan Academy.

That said, I ask: why are there no missions to "Multivariable Calculus" and "Linear Algebra"? Is there anything I can do (laughs) to encourage the creation of these missions? For they are contents present in the life of all graduating in Sciences and Engineering and are quite special, being complex and dense subjects in which there is not much good material in the internet.

Another important issue is a more mathematical approach to science topics. Colleges quickly charge the calculus applications into science problems and having a separate area on the site to handle this would be magnificent. Common examples of these applications are: vector calculus and equations differences in resolution for problems involving Newtonian dynamics, differential equations in problems of chemical physics and statistical-economic analyzes