The Condition for INVERSE FUNCTIONS: One-to-One and Horizontal Line Test
1:00
YouTubeBill Kinney
The Condition for INVERSE FUNCTIONS: One-to-One and Horizontal Line Test
TL;DW: To have an inverse function f⁻¹(x), a function must be ONE-TO-ONE. This means every output has a unique input (it passes the HORIZONTAL LINE TEST). In this clip, we analyze f(x) = 3x - 4 to verify it can be inverted before we start the algebra. KEY CONCEPTS COVERED: ∙ONE-TO-ONE DEFINITION: Distinct inputs must result in distinct ...
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