Current location - Training Enrollment Network - Mathematics courses - 20 13 is there a problem with the second question 1 1 in the new math curriculum standard for college entrance examination? Why can't I solve it?
20 13 is there a problem with the second question 1 1 in the new math curriculum standard for college entrance examination? Why can't I solve it?
No problem!
The question 1 1 is that option c is monotonous, and f' (x) = 3x+2ax+b, so f(x) is at (negative infinity, x 1) and (x2, positive infinity), and at (x 1, x2.