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Svetllana [295]
3 years ago
5

If f(x) = [xl-5, what is f(8.6)?

Mathematics
1 answer:
Fynjy0 [20]3 years ago
4 0

Answer:

  3 or 4, depending on the intended meaning of [x]

Step-by-step explanation:

Perhaps you mean ...

  \displaystyle f(x)= \lfloor x\rfloor -5\\\\f(8.6)=\lfloor 8.6\rfloor-5=8-5=3

__

On the other hand, perhaps you mean ...

  \displaystyle f(x)=\lceil x\rceil -5\\\\f(8.6)=\lceil 8.6\rceil-5=9-5=4

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F(x)=-2x^2+4x+5<br> Find the critical numbers
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Answer:

To find critical points, take the first derivative and set it equal to zero:

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x = 1

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Alternatively, if you mean zeros, or where the x intersects, you can use the quadratic equation.

6 0
2 years ago
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umka2103 [35]

Answer:

The period of function is 5 and amplitude is 3.

Step-by-step explanation:

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In the above case looking at the peak point at time 5 seconds, the same value is obtained at time 10 seconds.

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8 0
3 years ago
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Step-by-step explanation:

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