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AllQuestion and Answers: Page 319

Question Number 183936 Answers: 1 Comments: 0

Question Number 183935 Answers: 3 Comments: 0

(√(x^2 +2))+(√(x^2 −4))=A (√(x^2 +2))−(√(x^2 −4))=?

$$\sqrt{{x}^{\mathrm{2}} +\mathrm{2}}+\sqrt{{x}^{\mathrm{2}} −\mathrm{4}}={A} \\ $$$$\sqrt{{x}^{\mathrm{2}} +\mathrm{2}}−\sqrt{{x}^{\mathrm{2}} −\mathrm{4}}=? \\ $$

Question Number 183927 Answers: 2 Comments: 0

lim_(x→2 ) ((tan (2πx)+cos ((π/2)x)+tan ((π/8)x))/(x^2 +4x−12)) =?

$$\:\underset{{x}\rightarrow\mathrm{2}\:} {\mathrm{lim}}\:\frac{\mathrm{tan}\:\left(\mathrm{2}\pi{x}\right)+\mathrm{cos}\:\left(\frac{\pi}{\mathrm{2}}{x}\right)+\mathrm{tan}\:\left(\frac{\pi}{\mathrm{8}}{x}\right)}{{x}^{\mathrm{2}} +\mathrm{4}{x}−\mathrm{12}}\:=? \\ $$

Question Number 183913 Answers: 0 Comments: 0

Question Number 183893 Answers: 0 Comments: 2

Question Number 183886 Answers: 4 Comments: 0

Question Number 183879 Answers: 0 Comments: 0

Question Number 183865 Answers: 1 Comments: 0

Question Number 183864 Answers: 4 Comments: 2

Question Number 183863 Answers: 1 Comments: 0

Question Number 183850 Answers: 0 Comments: 0

𝚺_(n=1) ^∞ (1/(n^3 (((6n)),((3n)) )))

$$\underset{\boldsymbol{\mathrm{n}}=\mathrm{1}} {\overset{\infty} {\boldsymbol{\sum}}}\frac{\mathrm{1}}{\boldsymbol{\mathrm{n}}^{\mathrm{3}} \begin{pmatrix}{\mathrm{6}\boldsymbol{\mathrm{n}}}\\{\mathrm{3}\boldsymbol{\mathrm{n}}}\end{pmatrix}} \\ $$

Question Number 183848 Answers: 2 Comments: 1

Question Number 183847 Answers: 5 Comments: 0

Question Number 183846 Answers: 4 Comments: 0

Question Number 183845 Answers: 2 Comments: 0

Question Number 183844 Answers: 2 Comments: 0

Question Number 183843 Answers: 1 Comments: 0

Question Number 183835 Answers: 2 Comments: 0

Resoudre le systeme abc =30 a+b+c =10 ab+bc+ac=31

$${Resoudre}\:{le}\:{systeme} \\ $$$$\:\:\mathrm{abc}\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:=\mathrm{30} \\ $$$$\:\:\:\mathrm{a}+\mathrm{b}+\mathrm{c}\:\:\:\:\:\:\:=\mathrm{10} \\ $$$$\:\:\:\mathrm{ab}+\mathrm{bc}+\mathrm{ac}=\mathrm{31} \\ $$$$ \\ $$

Question Number 183827 Answers: 1 Comments: 0

calcul: S=Σ_(n=2 ) ^(+oo) (n/((n^2 −1)^2 ))

$${calcul}:\:\:{S}=\underset{{n}=\mathrm{2}\:\:} {\overset{+{oo}} {\sum}}\frac{{n}}{\left({n}^{\mathrm{2}} −\mathrm{1}\right)^{\mathrm{2}} } \\ $$

Question Number 183825 Answers: 1 Comments: 0

solve for x by using lambert function 2^x +3x=8

$${solve}\:{for}\:{x}\:{by}\:{using}\:{lambert}\:{function} \\ $$$$\mathrm{2}^{{x}} +\mathrm{3}{x}=\mathrm{8} \\ $$

Question Number 183815 Answers: 1 Comments: 0

Question Number 183814 Answers: 1 Comments: 0

determine eigen values and eigen vectors for each λ . and verify Ax=λx A= [(((√3)/2),(−(1/2))),((1/2),( ((√3)/2))) ]

$${determine}\:{eigen}\:{values}\:{and}\:{eigen}\:{vectors}\:{for} \\ $$$${each}\:\lambda\:.\:{and}\:{verify}\:{Ax}=\lambda{x} \\ $$$${A}=\begin{bmatrix}{\frac{\sqrt{\mathrm{3}}}{\mathrm{2}}}&{−\frac{\mathrm{1}}{\mathrm{2}}}\\{\frac{\mathrm{1}}{\mathrm{2}}}&{\:\:\:\:\:\frac{\sqrt{\mathrm{3}}}{\mathrm{2}}}\end{bmatrix} \\ $$

Question Number 183806 Answers: 1 Comments: 0

∫ ((√(x+(√(x^2 +25))))/x) dx =?

$$\:\:\int\:\frac{\sqrt{{x}+\sqrt{{x}^{\mathrm{2}} +\mathrm{25}}}}{{x}}\:{dx}\:=? \\ $$

Question Number 183803 Answers: 1 Comments: 0

Question Number 183783 Answers: 0 Comments: 0

Question Number 183777 Answers: 2 Comments: 1

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