please show all steps, thank you!!!!

#5 The derivative of the function FOOD = XRex is # 6 the derivative of Kh(t) = In(23) is? #7 the tangent line to the graph of the Function F ( X ) = plax - * 3 is horizontal at the point? #8 the differential of FOD = QX+3 is? X - 1 #9 the slopeof the normal line to the curve y=ex cos( x) at the point corresponding to X= O