Mathematics · Relations and Functions
एक फलन f: ℝ → ℝ, f(x) = x2 - 4x + 5 द्वारा परिभाषित है। यह फलन है:
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- 1न तो एकैकी है और न ही आच्छादक है।✓
- 2एकैकी और आच्छादक दोनों है।
- 3आच्छादक (surjective) है परंतु एकैकी (injective) नहीं है।
- 4एकैकी (injective) है परंतु आच्छादक (surjective) नहीं है।
सही उत्तर देखें
न तो एकैकी है और न ही आच्छादक है।
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