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Sticky Note
The domain of f(x) = log x is _____?
  1. [0, -∞]
  2. [0, ∞]
  3. [∞, ∞]
  4. None of these
Explanation

The domain of f(x)= log x is the set of all positive real numbers, which can be expressed in interval notation as 0, ∞.

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If f(x) = |x² - 50|, what is the value of f (-5)?
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