2. (1 point) Identify the error(s) in the following Matlab code-shell and tell me what the code appears to do. $\mathrm{A}=[1,2,3 ; 4,5,6]$ For $i=1: 3;$ $\mathrm{A}[\mathrm{j}, 1 ]=1$ End 3. (1 point) Evaluate the following derivatives. show all the work even if you remember the answer. (a) $\frac{d}{d x}\left(e^{x} \ln (x) +\cos ^{-1} (x) ight) $ (b) $\frac{d}{d x}\left(\sin ^{-1}(x) ight) $ (c) $\frac{d}{d x}(\log (2 x))$ CS.VS. 10731