College Algebra / Unit 7 Alg 351 short lesson, about 20 seconds
Power Functions
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The idea
A power function has the form f(x) = kxⁿ — one variable power carrying one coefficient, nothing else added.
In practice
f(x) = x³ and g(x) = −2x⁴ are power functions; every polynomial is a sum of them, one power function per term.
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