Mathematics · Relations and Functions
फलन f: R → R जो f(x) = 4 + 3cos x द्वारा परिभाषित है, वह है:
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- 1न तो एकैकी है और न ही आच्छादक✓
- 2आच्छादक है लेकिन एकैकी नहीं
- 3एकैकी है लेकिन आच्छादक नहीं
- 4एकैकी आच्छादक (bijective)
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न तो एकैकी है और न ही आच्छादक
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