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Question Number 226668 Answers: 1 Comments: 0

Question Number 226653 Answers: 0 Comments: 0

Σ_(k=1) ^∞ ((Si(πn))/n^2 )=?

$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\underset{{k}=\mathrm{1}} {\overset{\infty} {\sum}}\frac{\mathrm{Si}\left(\pi{n}\right)}{{n}^{\mathrm{2}} }=? \\ $$

Question Number 226651 Answers: 1 Comments: 1

Question Number 226641 Answers: 3 Comments: 1

if log _8 a+log _4 b^2 =5 & log _8^b +log _4 a^2 =7 ab=?

$${if}\:\mathrm{log}\:_{\mathrm{8}} {a}+\mathrm{log}\:_{\mathrm{4}} {b}^{\mathrm{2}} =\mathrm{5} \\ $$$$\& \\ $$$$\mathrm{log}\:_{\mathrm{8}} ^{{b}} +\mathrm{log}\:_{\mathrm{4}} {a}^{\mathrm{2}} =\mathrm{7} \\ $$$${ab}=? \\ $$

Question Number 226640 Answers: 0 Comments: 0

Question Number 226638 Answers: 1 Comments: 1

Question Number 226635 Answers: 1 Comments: 0

Question Number 226622 Answers: 0 Comments: 2

Question Number 226626 Answers: 0 Comments: 0

Question Number 226624 Answers: 1 Comments: 1

Question Number 226619 Answers: 0 Comments: 3

factorise x^2 −qx−p^2 +5pq−6q^2

$${factorise} \\ $$$${x}^{\mathrm{2}} −{qx}−{p}^{\mathrm{2}} +\mathrm{5}{pq}−\mathrm{6}{q}^{\mathrm{2}} \\ $$

Question Number 226612 Answers: 0 Comments: 1

Question Number 226610 Answers: 1 Comments: 0

Question Number 226608 Answers: 1 Comments: 0

Question Number 226609 Answers: 3 Comments: 0

Question Number 226603 Answers: 1 Comments: 0

Formulate the differential equation of the solution (a)y=Ae^(bx+1) (b)y=Asin x+Bcos x

$${Formulate}\:{the}\:{differential} \\ $$$${equation}\:{of}\:{the}\:{solution} \\ $$$$\left({a}\right){y}={Ae}^{{bx}+\mathrm{1}} \\ $$$$\left({b}\right){y}={A}\mathrm{sin}\:{x}+{B}\mathrm{cos}\:{x} \\ $$$$ \\ $$

Question Number 226601 Answers: 1 Comments: 0

Question Number 226598 Answers: 1 Comments: 0

(2x+1)^5 =a_5 x^5 +a_4 x^4 +a_3 x^3 ..+a_1 x+a_0 find a_5 +a_3 +a_1 and a_4 +a_2 +a_0

$$\left(\mathrm{2}{x}+\mathrm{1}\right)^{\mathrm{5}} ={a}_{\mathrm{5}} {x}^{\mathrm{5}} +{a}_{\mathrm{4}} {x}^{\mathrm{4}} +{a}_{\mathrm{3}} {x}^{\mathrm{3}} ..+{a}_{\mathrm{1}} {x}+{a}_{\mathrm{0}} \\ $$$${find}\:{a}_{\mathrm{5}} +{a}_{\mathrm{3}} +{a}_{\mathrm{1}} {and}\:{a}_{\mathrm{4}} +{a}_{\mathrm{2}} +{a}_{\mathrm{0}} \\ $$

Question Number 226596 Answers: 0 Comments: 0

Question Number 226595 Answers: 0 Comments: 0

Question Number 226593 Answers: 0 Comments: 2

Question Number 226588 Answers: 0 Comments: 0

Question Number 226587 Answers: 0 Comments: 0

Question Number 226586 Answers: 0 Comments: 0

Question Number 226585 Answers: 0 Comments: 0

Question Number 226581 Answers: 3 Comments: 0

find the polar of (1+i)(1+i(√3))

$$\boldsymbol{\mathrm{find}}\:\boldsymbol{\mathrm{the}}\:\boldsymbol{\mathrm{polar}}\:\boldsymbol{\mathrm{of}} \\ $$$$\left(\mathrm{1}+\boldsymbol{\mathrm{i}}\right)\left(\mathrm{1}+\boldsymbol{\mathrm{i}}\sqrt{\mathrm{3}}\right) \\ $$

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