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AlgebraQuestion and Answers: Page 57

Question Number 200139    Answers: 2   Comments: 0

If x : y : z = (1/7) : (1/3) : (1/(21)) 5x − 2y + z = 16 Find: y = ?

$$\mathrm{If} \\ $$$$\mathrm{x}\::\:\mathrm{y}\::\:\mathrm{z}\:=\:\frac{\mathrm{1}}{\mathrm{7}}\::\:\frac{\mathrm{1}}{\mathrm{3}}\::\:\frac{\mathrm{1}}{\mathrm{21}} \\ $$$$\mathrm{5x}\:−\:\mathrm{2y}\:+\:\mathrm{z}\:=\:\mathrm{16} \\ $$$$ \\ $$$$\mathrm{Find}:\:\:\:\mathrm{y}\:=\:? \\ $$

Question Number 200134    Answers: 0   Comments: 0

Question Number 200087    Answers: 1   Comments: 2

if ω ≠ 1 is a root of unity aand z is a complex number such that ∣z∣ = 1 then ∣((2+3ω+4zω^2 )/(4ω+3ω^2 z+2z))∣= ?

$$\:\:\mathrm{if}\:\omega\:\neq\:\mathrm{1}\:\mathrm{is}\:\mathrm{a}\:\mathrm{root}\:\mathrm{of}\:\mathrm{unity}\:\mathrm{aand}\:\mathrm{z}\:\mathrm{is}\:\mathrm{a}\: \\ $$$$\mathrm{complex}\:\mathrm{number}\:\mathrm{such}\:\mathrm{that}\:\mid{z}\mid\:=\:\mathrm{1}\:\mathrm{then} \\ $$$$\:\:\mid\frac{\mathrm{2}+\mathrm{3}\omega+\mathrm{4}{z}\omega^{\mathrm{2}} }{\mathrm{4}\omega+\mathrm{3}\omega^{\mathrm{2}} {z}+\mathrm{2}{z}}\mid=\:? \\ $$

Question Number 200066    Answers: 1   Comments: 0

If ((1 + x)/( (√3))) = 3 find x + (1/x) − 1 = ?

$$\mathrm{If}\:\:\:\frac{\mathrm{1}\:+\:\mathrm{x}}{\:\sqrt{\mathrm{3}}}\:=\:\mathrm{3}\:\:\:\mathrm{find}\:\:\:\mathrm{x}\:+\:\frac{\mathrm{1}}{\mathrm{x}}\:−\:\mathrm{1}\:=\:? \\ $$

Question Number 200035    Answers: 1   Comments: 2

Question Number 200025    Answers: 3   Comments: 0

Question Number 200019    Answers: 1   Comments: 0

Question Number 200013    Answers: 0   Comments: 3

Question Number 200012    Answers: 0   Comments: 0

Question Number 199932    Answers: 2   Comments: 0

1. If 3 ∙ ab^(−) + bc^(−) = 115 Find: max(a+b+c)=? 2. a,b,c∈N If (a/2) + (b/3) = (c/4) Find: min(a+b+c)=?

$$\mathrm{1}. \\ $$$$\mathrm{If}\:\:\:\mathrm{3}\:\centerdot\:\overline {\mathrm{ab}}\:+\:\overline {\mathrm{bc}}\:=\:\mathrm{115} \\ $$$$\mathrm{Find}:\:\:\:\mathrm{max}\left(\mathrm{a}+\mathrm{b}+\mathrm{c}\right)=? \\ $$$$ \\ $$$$\mathrm{2}. \\ $$$$\mathrm{a},\mathrm{b},\mathrm{c}\in\mathbb{N} \\ $$$$\mathrm{If}\:\:\:\frac{\mathrm{a}}{\mathrm{2}}\:\:+\:\:\frac{\mathrm{b}}{\mathrm{3}}\:\:=\:\:\frac{\mathrm{c}}{\mathrm{4}} \\ $$$$\mathrm{Find}:\:\:\:\mathrm{min}\left(\mathrm{a}+\mathrm{b}+\mathrm{c}\right)=? \\ $$

Question Number 199923    Answers: 2   Comments: 0

Question Number 199900    Answers: 2   Comments: 0

Question Number 199898    Answers: 1   Comments: 0

Question Number 199862    Answers: 0   Comments: 0

consider the taylor expansion of the function (1/(1+x^3 )) centered at x = 1/2 then the radius of convergence of the power series repersentation of the function is

$$\mathrm{consider}\:\mathrm{the}\:\mathrm{taylor}\:\mathrm{expansion}\:\mathrm{of}\:\mathrm{the}\:\mathrm{function}\:\frac{\mathrm{1}}{\mathrm{1}+\mathrm{x}^{\mathrm{3}} } \\ $$$$\mathrm{centered}\:\mathrm{at}\:\mathrm{x}\:=\:\mathrm{1}/\mathrm{2}\:\mathrm{then}\:\mathrm{the}\:\mathrm{radius}\:\mathrm{of}\:\mathrm{convergence} \\ $$$$\mathrm{of}\:\mathrm{the}\:\mathrm{power}\:\mathrm{series}\:\mathrm{repersentation}\:\mathrm{of}\:\mathrm{the}\:\mathrm{function}\:\mathrm{is} \\ $$

Question Number 199893    Answers: 0   Comments: 2

Question Number 199890    Answers: 0   Comments: 0

Question Number 199889    Answers: 0   Comments: 0

Question Number 199888    Answers: 0   Comments: 0

Question Number 199840    Answers: 1   Comments: 0

Question Number 199837    Answers: 1   Comments: 0

Question Number 199836    Answers: 0   Comments: 3

Question Number 199775    Answers: 2   Comments: 0

Question Number 199774    Answers: 1   Comments: 0

Question Number 199772    Answers: 0   Comments: 0

Question Number 199770    Answers: 4   Comments: 0

Question Number 199752    Answers: 0   Comments: 0

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