Its B. it would be impossible to be D, because a positive plus a positive cannot be a negative. but a Negative plus a positive would equal a negative. so B is correct
Answer:
(B) π/12 + π/6 k
Step-by-step explanation:
Points of inflection are where f"(x) = 0 and changes signs.
f(x) = cos²(3x)
f(x) = (cos(3x))²
f'(x) = 2 (cos(3x))¹ × -sin(3x) × 3
f'(x) = -6 sin(3x) cos(3x)
Using double angle formula:
f'(x) = -3 sin(6x)
f"(x) = -3 cos(6x) × 6
f"(x) = -18 cos(6x)
0 = -18 cos(6x)
0 = cos(6x)
6x = π/2 + 2πk or 6x = 3π/2 + 2πk
We can simplify this to:
6x = π/2 + πk
x = π/12 + π/6 k
Answer:
es ese quizizz?
d
Step-by-step explanation:
Answer:
GFC
Step-by-step explanation:
Line m includes points B and J.
Line p includes points F and G.
All four points are in the plane of the paper.
The points GFC define the plane of the paper.
n is wrong. n is a line.
H is wrong. H is a point.
JDB is wrong. JDB is a line.