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Identifying Exponential Functions

Avg difficulty 2.5

Which of the following equations are not exponential functions?

  1. f(x)= 4 3( x−2 ) f \left(x\right) = 4^{3 \left(x - 2\right)}
  2. g(x)= x 3 g \left(x\right) = x^{3}
  3. h(x)= ( 1 3 ) x h \left(x\right) = \left(\frac{1}{3}\right)^{x}
  4. j(x)= ( −2 ) x j \left(x\right) = \left(- 2\right)^{x}

OpenStax Algebra and Trigonometry 2e, 6.1 Exponential Functions, exercise 11

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.