Question

write down
the operator A^2 for A
a)d/dx .x


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Answer 1

Answer:

Your confusion stems from the application of the product rule, which is generally:

ddx(u⋅v)=dudx⋅v+u⋅dvdx

In your case it is:

ddx(x⋅f(x))=dxdx⋅f(x)+x⋅df(x)dx