Mathematics · Relations and Functions
What is the range of the function y = x4 - 4x2 defined for all real numbers x?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1y ≥ -4✓
- 2y ≥ -8
- 3y ≤ 0
- 4All real numbers
Correct answer
y ≥ -4
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