Find the intervals on which f increases and the intervals on which f decreases.

number 23 only

Preview File Edit View Go Tools Window Help D Q 8. Mon Apr 17 3:35 PM 1602941760-salas-hil... Page 189 of 1,171 13. f(x) = 1x2 -51. 14 . f (x ) = x2(1 + x ) 2 15. f(x) = x - 1 16. f(x) = x2+- 16 x+1 1 + x2 17. f(x) = V 2+ x2' 18. f(x) = |x+1//x 19. f(x) = x - cosx, 20. f(x) = x + sinx, 21. f(x) = cos 2x + 2cosx, 0