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In Exercises 9-16, explain whether the given equation defines an exponential function. Give reasons for your answers. Write the base for each exponential function. $y=x^3$ 

   In Exercises 9-16, explain whether the given equation defines an exponential function. Give reasons for your answers. Write the base for each exponential function.
$y=x^3$
Precalculus: A Right Triangle Approach
Precalculus: A Right Triangle Approach
Ratti, McWaters,… 5th Edition
Chapter 4, Problem 9 ↓
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In Exercises 9-16, explain whether the given equation defines an exponential function. Give reasons for your answers. Write the base for each exponential function. $y=x^3$
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00:01 All right, so an exponential function must have a constant base and the variable exponent.
00:07 All right, so that's the definition of exponential function.
00:10 So when we look at y equals 3 to the power of x, we see that we have a base 3, which is a constant, and the exponential x, which is a variable.
00:21 So this is an exponential function...
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