I needs to be done in 24 hours. Only section 1 needs to be answer

I needs to be done in 24 hours. Only section 1 needs to be answered, with either a proof or a counter example so I can check your work.The Top statement reads:Mark the following statements as true (w) or false (f ). Every correctly set mark nets 1/2 points, for every incorrectanswer 1/2 Punkt are deduced. A negative overall score counts as 0 points,Mark the terms f(x1,x2) as »correct«, through which a function f :R2 →R is defined, whose Taylor-polynomial of 1. degree in (0, 0) is given through T 1f ,(0,0)  (x1, x2) = 1 + x1.