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Question Number 189449 Answers: 1 Comments: 0

Question Number 189446 Answers: 1 Comments: 0

x^2 =(2)^(1/5) +y y^2 =(2)^(1/5) +x x∙y=? x≠y

$${x}^{\mathrm{2}} =\sqrt[{\mathrm{5}}]{\mathrm{2}}+{y} \\ $$$${y}^{\mathrm{2}} =\sqrt[{\mathrm{5}}]{\mathrm{2}}+{x} \\ $$$${x}\centerdot{y}=?\:\:\:\:\:\:\:\:\:\:\:{x}\neq{y} \\ $$

Question Number 189445 Answers: 2 Comments: 0

Question Number 189429 Answers: 1 Comments: 1

Question Number 189428 Answers: 1 Comments: 0

Question Number 189426 Answers: 0 Comments: 0

Question Number 189421 Answers: 1 Comments: 1

Question Number 189418 Answers: 1 Comments: 0

Know: f(x)=3x+2+∫^1 _0 xf(x)dx Eluavte: ∫^2 _0 f(x)dx=¿

$${Know}:\:{f}\left({x}\right)=\mathrm{3}{x}+\mathrm{2}+\underset{\mathrm{0}} {\int}^{\mathrm{1}} {xf}\left({x}\right){dx} \\ $$$${Eluavte}:\:\underset{\mathrm{0}} {\int}^{\mathrm{2}} {f}\left({x}\right){dx}=¿ \\ $$

Question Number 189417 Answers: 1 Comments: 0

Question Number 189409 Answers: 2 Comments: 0

Question Number 189407 Answers: 0 Comments: 1

determiner l heure de depart par un auto qui part pour rejiindre la gare B juste a l′ arrivee du train partant a 7h,de la ville A vers la ville B a vitesse de 180km/h.?

$${determiner}\:{l}\:{heure}\:{de}\: \\ $$$${depart}\:{par}\:\:{un}\:{auto}\:{qui}\: \\ $$$${part}\:{pour}\:{rejiindre}\:{la} \\ $$$${gare}\:\:{B}\:{juste}\:{a}\:{l}'\:{arrivee} \\ $$$${du}\:{train}\:\:{partant}\:{a}\:\mathrm{7}{h},{de}\:{la}\:{ville}\:{A} \\ $$$${vers}\:{la}\:{ville}\:{B}\:{a}\:{vitesse}\:{de}\: \\ $$$$\mathrm{180}{km}/{h}.? \\ $$$$ \\ $$

Question Number 189394 Answers: 0 Comments: 0

Prove that: ln(n+1)<(1/( (√(1^2 +1))))+(1/( (√(2^2 +2))))+...+(1/( (√(n^2 +n))))(∀n∈N^∗ )

$${Prove}\:{that}: \\ $$$${ln}\left({n}+\mathrm{1}\right)<\frac{\mathrm{1}}{\:\sqrt{\mathrm{1}^{\mathrm{2}} +\mathrm{1}}}+\frac{\mathrm{1}}{\:\sqrt{\mathrm{2}^{\mathrm{2}} +\mathrm{2}}}+...+\frac{\mathrm{1}}{\:\sqrt{{n}^{\mathrm{2}} +{n}}}\left(\forall{n}\in{N}^{\ast} \right) \\ $$

Question Number 189390 Answers: 0 Comments: 0

Question Number 189384 Answers: 0 Comments: 0

Question Number 189382 Answers: 1 Comments: 0

Question Number 189383 Answers: 0 Comments: 0

Question Number 189375 Answers: 3 Comments: 0

show that : (1/(cscx + cot x)) = cscx − cot x

$$ \\ $$$$\:\:\:\:{show}\:{that}\:: \\ $$$$\:\:\:\:\frac{\mathrm{1}}{{cscx}\:+\:{cot}\:{x}}\:=\:{cscx}\:−\:{cot}\:{x} \\ $$$$ \\ $$$$ \\ $$

Question Number 189374 Answers: 1 Comments: 0

Δ={(x,y,z) ∈ R^3 :x^2 +y^2 ≤1 , x≥0, 0≤z≤1+y}. calculate: ∫∫∫_Δ dxdydz.

$$\Delta=\left\{\left({x},{y},{z}\right)\:\in\:\mathbb{R}^{\mathrm{3}} :{x}^{\mathrm{2}} +{y}^{\mathrm{2}} \leqslant\mathrm{1}\:,\:\:{x}\geqslant\mathrm{0},\:\mathrm{0}\leqslant{z}\leqslant\mathrm{1}+{y}\right\}. \\ $$$${calculate}: \\ $$$$\int\int\int_{\Delta} {dxdydz}. \\ $$

Question Number 189436 Answers: 1 Comments: 1

Question Number 189438 Answers: 1 Comments: 0

Question Number 189367 Answers: 1 Comments: 0

Question Number 189357 Answers: 2 Comments: 5

How many pairs of positive integers x, y exist such that HCF (x, y) + LCM(x, y) = 91?

$$ \\ $$How many pairs of positive integers x, y exist such that HCF (x, y) + LCM(x, y) = 91?

Question Number 189350 Answers: 1 Comments: 0

Question Number 189345 Answers: 1 Comments: 0

solve ∫t^(−6) (t^2 +3)^2 dt

$${solve} \\ $$$$\int{t}^{−\mathrm{6}} \left({t}^{\mathrm{2}} +\mathrm{3}\right)^{\mathrm{2}} {dt} \\ $$

Question Number 189339 Answers: 1 Comments: 0

Question Number 189363 Answers: 2 Comments: 0

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