<p>Also, multivariable calculus and linear algebra are basic 1st/2nd year courses that a BSc in Economics would require. It is unlikely they’ll be over your head unless you are particularly bad at math. Academics just like to give fancy names to relatively straight-forward concepts.</p>
<p>I’m not sure how you could even show basic economic concepts from 1st year micro and macro without using multivariate calculus.</p>