In the following exercises, use the Fundamental Theorem of Calculus, Part 1, to find each derivative. 148. ax et dt X 149. dx e cost dt 150. ds 151. dx 3 V16 - $2 152. d tdt Vx 153. dx tdt sin x 154. d dx 1 - 12 at o 155. d dx 1 - 12 dt COS X