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Question Number 189739    Answers: 1   Comments: 0

A jar is full of candy, 8 pieces are yellow, 12 pieces are red, 6 pieces are orange and 4 pieces are blue. What is the probability that you pick out a piece that is not yellow, put it back and then pick out a yellow piece?

$$\mathrm{A}\:\mathrm{jar}\:\mathrm{is}\:\mathrm{full}\:\mathrm{of}\:\mathrm{candy},\:\mathrm{8}\:\mathrm{pieces}\:\mathrm{are}\:\mathrm{yellow},\:\mathrm{12}\:\mathrm{pieces} \\ $$$$\mathrm{are}\:\mathrm{red},\:\mathrm{6}\:\mathrm{pieces}\:\mathrm{are}\:\mathrm{orange}\:\mathrm{and}\:\mathrm{4}\:\mathrm{pieces} \\ $$$$\mathrm{are}\:\mathrm{blue}.\:\mathrm{What}\:\mathrm{is}\:\mathrm{the}\:\mathrm{probability}\:\mathrm{that}\:\mathrm{you}\:\mathrm{pick} \\ $$$$\mathrm{out}\:\mathrm{a}\:\mathrm{piece}\:\mathrm{that}\:\mathrm{is}\:\mathrm{not}\:\mathrm{yellow},\:\mathrm{put}\:\mathrm{it}\:\mathrm{back} \\ $$$$\mathrm{and}\:\mathrm{then}\:\mathrm{pick}\:\mathrm{out}\:\mathrm{a}\:\mathrm{yellow}\:\mathrm{piece}? \\ $$

Question Number 189752    Answers: 1   Comments: 0

∫^∞ _0 x^2 .e^(−x^2 ) dx=¿

$$\underset{\mathrm{0}} {\int}^{\infty} {x}^{\mathrm{2}} .{e}^{−{x}^{\mathrm{2}} } {dx}=¿ \\ $$

Question Number 189720    Answers: 1   Comments: 0

Question Number 189842    Answers: 0   Comments: 0

lim_(x→(π/3)) ((2cos 5x tan^2 x−2sin^2 2x)/(4sin 2x cos x−tan x))=?

$$\:\:\underset{{x}\rightarrow\frac{\pi}{\mathrm{3}}} {\mathrm{lim}}\:\frac{\mathrm{2cos}\:\mathrm{5x}\:\mathrm{tan}\:^{\mathrm{2}} \mathrm{x}−\mathrm{2sin}\:^{\mathrm{2}} \mathrm{2x}}{\mathrm{4sin}\:\mathrm{2x}\:\mathrm{cos}\:\mathrm{x}−\mathrm{tan}\:\mathrm{x}}=? \\ $$

Question Number 189716    Answers: 3   Comments: 0

Question Number 189715    Answers: 1   Comments: 0

Question Number 189711    Answers: 0   Comments: 0

Question Number 189710    Answers: 3   Comments: 0

Question Number 189704    Answers: 0   Comments: 0

Question Number 189701    Answers: 1   Comments: 1

Question Number 189700    Answers: 2   Comments: 2

Question Number 189697    Answers: 0   Comments: 0

calculate ... S= Σ_(n=1) ^∞ (( ζ (2n ))/n^( 2) ) = ? −−−−−−−−−

$$ \\ $$$$\:\:\:\:\:\:\:\mathrm{calculate}\:... \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{S}=\:\:\underset{{n}=\mathrm{1}} {\overset{\infty} {\sum}}\frac{\:\zeta\:\left(\mathrm{2}{n}\:\right)}{{n}^{\:\mathrm{2}} }\:=\:?\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\: \\ $$$$\:\:\:\:\:\:\:\:−−−−−−−−− \\ $$

Question Number 189693    Answers: 2   Comments: 1

Question Number 189685    Answers: 2   Comments: 0

Question Number 189684    Answers: 1   Comments: 1

Question Number 189683    Answers: 1   Comments: 0

Question Number 189680    Answers: 0   Comments: 6

Question Number 189679    Answers: 0   Comments: 0

Question Number 189672    Answers: 0   Comments: 2

Question Number 189667    Answers: 0   Comments: 0

Question Number 189666    Answers: 0   Comments: 0

Question Number 189665    Answers: 1   Comments: 0

Question Number 189662    Answers: 0   Comments: 0

Question Number 189661    Answers: 0   Comments: 0

Question Number 189660    Answers: 0   Comments: 0

Question Number 189643    Answers: 1   Comments: 0

f(x)=((sinx+cosx)/3) R_(f(x)) =?

$$\mathrm{f}\left(\mathrm{x}\right)=\frac{\mathrm{sinx}+\mathrm{cosx}}{\mathrm{3}} \\ $$$$\mathrm{R}_{\mathrm{f}\left(\mathrm{x}\right)} =? \\ $$

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