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f-x-3-sin-x-4-cos-x-R-f-




Question Number 169650 by mnjuly1970 last updated on 05/May/22
         f(x)= 3∣ sin(x)∣ −4∣cos(x)∣                 R_( f)  =?
$$ \\ $$$$\:\:\:\:\:\:\:{f}\left({x}\right)=\:\mathrm{3}\mid\:{sin}\left({x}\right)\mid\:−\mathrm{4}\mid{cos}\left({x}\right)\mid \\ $$$$ \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:{R}_{\:{f}} \:=? \\ $$
Commented by mkam last updated on 05/May/22
−4 ≤f(x)<3
$$−\mathrm{4}\:\leqslant{f}\left({x}\right)<\mathrm{3} \\ $$

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