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Nice-Calculus-f-x-tan-x-cot-x-R-f-Hint-x-Max-




Question Number 144721 by mnjuly1970 last updated on 28/Jun/21
            ......... Nice ......∗∗∗......Calculus.........            f ( x ) : = [ tan (x) + cot (x) ]                                          R_( f  )  = ?                        Hint::   [ x ] := Max { m ∈Z ∣ m ≤ x }
$$ \\ $$$$\:\:\:\:\:\:\:\:\:\:………\:\mathrm{Nice}\:……\ast\ast\ast……\mathrm{Calculus}……… \\ $$$$ \\ $$$$\:\:\:\:\:\:\:\:\mathrm{f}\:\left(\:\mathrm{x}\:\right)\::\:=\:\left[\:\mathrm{tan}\:\left(\mathrm{x}\right)\:+\:\mathrm{cot}\:\left(\mathrm{x}\right)\:\right] \\ $$$$\:\:\:\:\:\:\: \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{R}_{\:\mathrm{f}\:\:} \:=\:? \\ $$$$\:\:\:\: \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{Hint}::\:\:\:\left[\:\mathrm{x}\:\right]\::=\:\mathrm{Max}\:\left\{\:\mathrm{m}\:\in\mathbb{Z}\:\mid\:\mathrm{m}\:\leqslant\:\mathrm{x}\:\right\}\: \\ $$

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