Question Number 140206 by rs4089 last updated on 05/May/21 $${Evaluate}\:\:\:\:\:\:\underset{{n}=\mathrm{1}} {\overset{\infty} {\sum}}\frac{{H}_{{n}} }{{n}!} \\ $$$${here}\:{H}_{{n}} \:{is}\:{the}\:{nth}\:{harmonic}\:{number} \\ $$ Answered by Dwaipayan Shikari last updated on…
Question Number 74647 by liki last updated on 28/Nov/19 Commented by liki last updated on 28/Nov/19 $$…{plz}\:{need}\:{help}\:{those}\:{qns}! \\ $$ Commented by JDamian last updated on…
Question Number 74634 by Mr. K last updated on 27/Nov/19 Commented by Mr. K last updated on 28/Nov/19 $${The}\:{square}\:{is}\:{divided}\:{into}\:\mathrm{2}\:{triangles} \\ $$$${and}\:{one}\:{quadrilateral}.\:{The}\:{yellow} \\ $$$${area}\:{is}\:{S}\:{and}\:{the}\:{blue}\:{area}\:{is}\:\:\frac{{S}}{\mathrm{2}}. \\ $$$${Find}\:{AB}.…
Question Number 9100 by arinto27 last updated on 18/Nov/16 $$\mathrm{luas}\:\mathrm{segi}\:\mathrm{6}\:\mathrm{beraturan}\:\mathrm{dgn}\:\mathrm{panjang}\: \\ $$$$\mathrm{sisi}\:\mathrm{10}\:\mathrm{cm}\:\mathrm{adalah}…? \\ $$$$ \\ $$ Answered by sandy_suhendra last updated on 20/Nov/16 $$\mathrm{segi}\:\mathrm{6}\:\mathrm{beraturan}\:\mathrm{terdiri}\:\mathrm{dr}\:\mathrm{6}\:\mathrm{segitiga}\:\mathrm{sm}\:\mathrm{sisi} \\…
Question Number 74623 by liki last updated on 27/Nov/19 Commented by liki last updated on 27/Nov/19 $$….\:{I}\:{need}\:{help}\:{plz}… \\ $$ Answered by mr W last updated…
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Question Number 74582 by Maclaurin Stickker last updated on 26/Nov/19 $${Find}\:{all}\:{values}\:{of}\:{x}: \\ $$$$\left(\mathrm{2}^{{x}} \right)^{{x}^{\mathrm{2}} −\mathrm{8}} =\mathrm{32} \\ $$ Answered by MJS last updated on 26/Nov/19…
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Question Number 140089 by otchereabdullai@gmail.com last updated on 04/May/21 $$\mathrm{Given}\:\mathrm{that}\:\mathrm{log}_{\mathrm{4}} \left(\mathrm{y}−\mathrm{1}\right)+\mathrm{log}_{\mathrm{4}} \left(\frac{\mathrm{x}}{\mathrm{y}}\right)=\mathrm{k} \\ $$$$\mathrm{and}\:\mathrm{log}_{\mathrm{2}} \left(\mathrm{y}+\mathrm{1}\right)−\mathrm{log}_{\mathrm{2}} \mathrm{x}=\mathrm{k}−\mathrm{1} \\ $$$$\mathrm{Show}\:\mathrm{that}\:\mathrm{y}^{\mathrm{2}} =\mathrm{1}+\mathrm{8}^{\mathrm{k}} \\ $$$$\mathrm{Hence}\:\mathrm{deduce}\:\mathrm{the}\:\mathrm{value}\:\mathrm{of}\:\mathrm{y}\:\mathrm{and}\:\mathrm{x}\: \\ $$$$\mathrm{when}\:\mathrm{k}=\mathrm{1} \\ $$…