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17.10.2019 •
Mathematics
Over which interval is the graph x^2+3x+8 increasing
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Ответ:
now, the pending of the tangent line is d/dx f(x)
f'(x) = 2x + 3
now, we need know when the pending is increasing.
so
2x + 3> 0
solving
x>-3/2
The interval over which the function f(x)= x^2+3x+8 is increasing is (-3/2,+∞)
Ответ:
125 m/min
Step-by-step explanation:
Find the rate (speed) as follows:
25 meters
= (125/1) meters/min = 125 m/min
(1/5) minute
This is equivalent to about 380 ft/min