我math major 都唔識答

我試下答:數字係real set 入面嘅element;function 係subset of XxY(X 係domain,Y係Codomain) graph 係指x-y graph?係嘅話graph 係x,f(x)即係y係function of x,而locus係x(t),y(t),x同y無function關係。點解polynomial 可以長除唔識

不過我估同fundamental theorem of algebra 有關。integral個題唔識,只係記得係響mathematical analysis 後面教

我依稀記得係indefinite integral可以當做由-inf 到x(t) dt 去in,之後做chain rule?
matrix可以當係linear function,matrix嘅乘法可以當係function composition,至於點解咁定義係可以簡單(T2*T1)(e)=T2(T1(e))直接proof出黎。vector 係element of Vector space,而Vector Space (V)係特別嘅Group ,要滿足3個條件:1,0 belong to V;2,if u and v belong to V,then u+v also belong to V;3, if v belong to V, then n*v belong to V,n is a element of the field. 之於點解vector要用i j k?就咁(x, y, z)唔得咩我又唔識

不過我估係vector同position vector(即係point)事。三者分別我估係普通vector,position vector同complex number。column vector即係普通vector,而row vector就係linear function map vector to “number”,又係element of dual Vector space
利申:grad咗無耐,求巴打指正錯誤
