23. A particle moves along the x-axis with position given by s(t) = = t' -21. At what time(s) does the particle change direction on the time interval [0, 7]? A. 0 B. 5 C. 4 D. O and 5 E. 0 and 6 24. Use logarithmic differentiation to find the derivative of the function y = x2x A. 2 2x C. 21x +2 E. 2x . x2x-1 X B. (2Inx +2)x2x D. 25. Find the derivative of y = cos(x) sec (x) sin(x) A. C. E. sin(x) cos (x) Cos (x) -1 sin(x) B. D. sin(x cos (x)