Question

Question 6 Not yet answered Marked out of 5.00 P Flag question Find the intervals on which f(x) = 2x3 – 6x – 3 is increasing and decreasing. Select one: O a. Increasing on (-0, -1)) and on (1, 0); Decreasing on (-1,1) O b. Increasing on (-1,1); Decreasing on (-00,-1) and on (1, 0) C. Increasing on (-0,1); Decreasing on (1, 0) O d. Increasing on (1, 0); Decreasing on (-0,1) e. Increasing on (-0, 7))) and on (1, 0); Decreasing on (-7,1)

Answer 1

Gilla 3 f(x) 2x - 6x - 3 f(x) is incresing when #'(x)>0 decreasing when flow to f wor. to ni E f'(x) = 6x² - 6 f(x) is incresing when. f'(x) > 0 6x² - 670 x²-1 >o x² > 1 bel> x € (-00,-1) U (1,00) 7

in 66 & f'x) decresing f'(x) Lo 6 x ²-6 Lo x²-1 LO x² Li lel al XE (1,1) option a. is right incresing on (-0,1) fon (1,00) & Decresing Z =) on (آرام)