Find the Average Value of the Function f(x)=x^2-7 , [0,9]

,
The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.
Interval Notation:
Set-Builder Notation:
is continuous on .
is continuous
The average value of function over the interval is defined as .
Substitute the actual values into the formula for the average value of a function.
Split the single integral into multiple integrals.
By the Power Rule, the integral of with respect to is .
Since is constant with respect to , move out of the integral.
Combine and .
Substitute and simplify.
Evaluate at and at .
Simplify.
Raise to the power of .
Combine and .
Cancel the common factor of and .
Factor out of .
Cancel the common factors.
Factor out of .
Cancel the common factor.
Rewrite the expression.
Divide by .
Multiply by .
Subtract from .
Raising to any positive power yields .
Multiply by .
Multiply by .
Multiply by .
Simplify the denominator.
Multiply by .
Cancel the common factor of .
Factor out of .
Cancel the common factor.
Rewrite the expression.
Find the Average Value of the Function f(x)=x^2-7 , [0,9]

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