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Question Number 199781 Answers: 1 Comments: 0

f : R−{0,1} → R f(x)+f((1/(1−x)))= ((2(1−2x))/(x(1−x))) for x≠ 0 and x≠ 1

$$\: \\ $$$$ \mathrm{f}\::\:\mathrm{R}−\left\{\mathrm{0},\mathrm{1}\right\}\:\rightarrow\:\mathrm{R}\: \\ $$$$\:\: \\ $$$$ \mathrm{f}\left(\mathrm{x}\right)+\mathrm{f}\left(\frac{\mathrm{1}}{\mathrm{1}−\mathrm{x}}\right)=\:\frac{\mathrm{2}\left(\mathrm{1}−\mathrm{2x}\right)}{\mathrm{x}\left(\mathrm{1}−\mathrm{x}\right)}\: \\ $$$$\:\mathrm{for}\:\mathrm{x}\neq\:\mathrm{0}\:\mathrm{and}\:\mathrm{x}\neq\:\mathrm{1}\: \\ $$$$ \\ $$

Question Number 199775 Answers: 2 Comments: 0

Question Number 199774 Answers: 1 Comments: 0

Question Number 199772 Answers: 0 Comments: 0

Question Number 199771 Answers: 3 Comments: 0

Question Number 199770 Answers: 4 Comments: 0

Question Number 199769 Answers: 0 Comments: 0

62n7z7

$$\mathrm{62}{n}\mathrm{7}{z}\mathrm{7} \\ $$

Question Number 199766 Answers: 1 Comments: 0

Question Number 199753 Answers: 1 Comments: 0

Question Number 199752 Answers: 0 Comments: 0

Question Number 199738 Answers: 1 Comments: 0

Question Number 199733 Answers: 1 Comments: 0

Question Number 199732 Answers: 2 Comments: 0

Question Number 199731 Answers: 2 Comments: 0

Question Number 199730 Answers: 1 Comments: 0

Question Number 199729 Answers: 1 Comments: 0

Question Number 199728 Answers: 1 Comments: 0

Question Number 199723 Answers: 1 Comments: 0

Question Number 199721 Answers: 0 Comments: 0

Question Number 199719 Answers: 1 Comments: 0

Question Number 199718 Answers: 1 Comments: 0

{ ((cos x+cos y=(1/2))),((sin x+sin y=(1/4))),((sin 2x + sin 2y=−((27)/(20)))) :} sin (x+y) = ...

$$\:\begin{cases}{\mathrm{cos}\:\mathrm{x}+\mathrm{cos}\:\mathrm{y}=\frac{\mathrm{1}}{\mathrm{2}}}\\{\mathrm{sin}\:\mathrm{x}+\mathrm{sin}\:\mathrm{y}=\frac{\mathrm{1}}{\mathrm{4}}}\\{\mathrm{sin}\:\mathrm{2x}\:+\:\mathrm{sin}\:\mathrm{2y}=−\frac{\mathrm{27}}{\mathrm{20}}}\end{cases} \\ $$$$\:\:\:\mathrm{sin}\:\left(\mathrm{x}+\mathrm{y}\right)\:=\:... \\ $$

Question Number 199714 Answers: 0 Comments: 3

Statement Does the number of data have to be more than 100 in order to have a percentile value ?

$$\:{Statement}\: \\ $$$$\:{Does}\:{the}\:{number}\:{of}\:{data}\:{have} \\ $$$$\:{to}\:{be}\:{more}\:{than}\:\mathrm{100}\:{in}\:{order}\: \\ $$$$\:{to}\:{have}\:{a}\:{percentile}\:{value}\:? \\ $$

Question Number 199711 Answers: 3 Comments: 0

Question Number 199709 Answers: 1 Comments: 0

u_1 = 2 u_(n+1) = 3u_n + 2 u_n → n ¿

$${u}_{\mathrm{1}} \:=\:\mathrm{2}\: \\ $$$${u}_{{n}+\mathrm{1}} \:=\:\mathrm{3}{u}_{{n}} \:+\:\mathrm{2} \\ $$$${u}_{{n}} \:\rightarrow\:{n}\:¿ \\ $$

Question Number 199708 Answers: 0 Comments: 1

n^(20) +11^n =2023 (n∈N) n=¿

$${n}^{\mathrm{20}} +\mathrm{11}^{{n}} =\mathrm{2023}\:\left({n}\in{N}\right) \\ $$$${n}=¿ \\ $$

Question Number 199707 Answers: 1 Comments: 0

study the convergence Σ_(n≥o) ^ sin(π(√(4n^2 +2 ))

$${study}\:{the}\:{convergence} \\ $$$$\underset{{n}\geqslant{o}} {\overset{} {\sum}}{sin}\left(\pi\sqrt{\mathrm{4}{n}^{\mathrm{2}} +\mathrm{2}\:\:\:\:}\right. \\ $$

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