Hi! please help this question is worth 57 points :)
1 answer:
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The graph of 
is shown in the graph below.
The graph is of ∩-shape when the constant
of the quadratic equation 
is negative
The graph is of ∩-shape when the constant
Answer:
(2) (100, 300)
Step-by-step explanation:
One wave can be divided on 4 parts, as show on the picture.
Since a length of one whole wave equals 400, a length of each part is nanometers.
The height of the wave is decreasing on the second and on the third part, hence over the interval (100, 300).
