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donnasueanger
15.07.2019 •
Mathematics
Suppose that an object is moving along the ground and that the distance (in centimeters) it has travelled after t seconds is given by the formula f(t)=t2 cm. calculate the average speed during the 1 millionth of a second after t=3.
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Ответ:
The average speed is the average rate of change of the function.
The average speed during the 1 millionth of a second after t=3 is 6 cm/s
The function is given as:
The average rate of a function is:
1 millionth of a second after t=3 means that:
So, we have:
Expand the numerator
Hence, the average speed during the 1 millionth of a second after t=3 is 6 cm/s
Read more about average speed at:
link
Ответ:
Ответ:
It must have the same slope as the given line, so
m = -A/B = -1/-2 = 1/2
So far, we have
y = mx + b = x/2 + b
Use the given point to find b.
4 = -2/2 + b = -1 + b
b = 5
y = x/2 + 5
Multiply through by 2.
2y = x + 10
Standard form:
x - 2y = -10