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Tems11 [23]
3 years ago
11

For each function below, find its domain and then determine if the function increasing, decreasing, or constant on each piece of

the domain.
f(r)=5r^2−4
The interval on which the function is increasing is : ( , )
The interval on which the function is decreasing is : ( , )
The interval on which the function is constant is : ( , )
Mathematics
1 answer:
VashaNatasha [74]3 years ago
8 0

Answer:

Domain:  all real numbers

The interval on which the function is increasing is : (0 , infinity)

The interval on which the function is decreasing is : (-infinity , 0)

The interval on which the function is constant is : ( 0,0 )

Step-by-step explanation:

f(r)=5r^2−4

This is  a quadratic function.

vertex at  (0, -4)  and with positive coefficient for r^2

The interval on which the function is increasing is : (0 , infinity)

The interval on which the function is decreasing is : (-infinity , 0)

The interval on which the function is constant is : ( 0,0 )

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Determine the domain of the function h=9x/x(x^2-49)
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( -  \infty , - 7) \cup( - 7 , 0) \cup(0 , 7 )\cup(7 , +   \infty )

EXPLANATION

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This function is defined for values where the denominator is not equal to zero.

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