The contracting officer is designated as the source selection authority, unless the agency head appoints another individual for a particular acquisition or group of acquisitions. (6) Select the source or sources whose proposal is the best value to the Government (10 U.S.C. 2305(b)(4)(C) and 41 U.S.C. 3703(c)).
In mathematics, a critical point or stationary point of a differentiable function of a real or complex variable is any value in its domain where its derivative is 0. Some authors include in the critical points the limit points where the function may be prolongated by continuity and where the derivative is not defined.
Let me just start with an example: Find the critical points of y=x-2sinx on [o, pi2]. So I know you first find the derivative and then set it equal to zero, yielding f'(x)=1-2cosx=0. I know that this is true when x=pi/3 and 5pi/3 but I do not understand how to get these values....I don't know how to utilize the unit circle in order to find the critical points of trig functions.