Question

2.5 Points)
6. Let f(x) = x3 + ax? + bx +5 sin?x be an increasing function on the set R. Then, a and b
satisfy
(a) 02 - 3b - 15 > 0 (b) a? - 3b + 15 > 0 (c) 22 - 3b + 15 <0 (d) a > 0 and b > 0
a​

Answer 1

Answer:

c) a2-3b+15<0

is your correct answer