MCQ
$ f(x) = \cos [x], -\pi / 4 < x < \pi /4,$ નો વિસ્તાર $[x]$ એ મહત્તમ પૂર્ણાંક $ \leq x,$ બતાવે
- ✓$ {1,\cos1}$
- B${0,- \cos1}$
- C${0}$
- D$ {0 ,-1}$
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