Question Number 141632 by Willson last updated on 21/May/21 $$\mathrm{Let}\:{f}\left({x}\right)=\frac{{sin}\left({x}\right)}{{x}}\:,\:\mathrm{prove}\:\mathrm{that}\:: \\ $$$$\underset{{n}=\mathrm{0}} {\overset{\infty} {\sum}}\left[\:{f}\left({n}\pi+\alpha\right)+{f}\left({n}\pi−\alpha\right)\:\right]=\:\mathrm{1}+{f}\left(\alpha\right) \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 76088 by aliesam last updated on 23/Dec/19 Commented by mr W last updated on 23/Dec/19 $${r}=\mathrm{5} \\ $$$${see}\:{Q}#\mathrm{64112} \\ $$ Commented by aliesam…
Question Number 76087 by aliesam last updated on 23/Dec/19 Answered by mr W last updated on 23/Dec/19 Commented by mr W last updated on 23/Dec/19…
Question Number 10528 by Saham last updated on 16/Feb/17 $$\mathrm{Give}\:\mathrm{the}\:\mathrm{velocity}\:\mathrm{field} \\ $$$$\mathrm{v}\:=\:\left(\mathrm{6}\:+\:\mathrm{2xy}\:+\:\mathrm{t}^{\mathrm{2}} \right)\mathrm{i}\:−\:\left(\mathrm{xy}^{\mathrm{2}} \:+\:\mathrm{10t}\right)\mathrm{j}\:+\:\mathrm{25k} \\ $$$$\mathrm{what}\:\mathrm{is}\:\mathrm{the}\:\mathrm{acceleration}\:\mathrm{of}\:\mathrm{the}\:\mathrm{particle}\:\mathrm{at}\:\left(\mathrm{3},\:\mathrm{0},\:\mathrm{2}\right) \\ $$$$\mathrm{at}\:\mathrm{time}\:\mathrm{t}\:=\:\mathrm{1}. \\ $$ Answered by robocop last updated…
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Question Number 141129 by bobhans last updated on 16/May/21 $${For}\:{what}\:{values}\:{of}\:\lambda\:{are}\:{the} \\ $$$${vectors}\:\lambda\hat {{i}}\:+\:\mathrm{2}\hat {{j}}\:+\:\hat {{k}}\:,\:\mathrm{3}\hat {{i}}\:+\mathrm{4}\hat {{j}}\:+\lambda\hat {{k}}\: \\ $$$$,\:\hat {{j}}\:+\:\hat {{k}}\:\:{coplanar}\: \\ $$ Answered…
Question Number 75518 by aliesam last updated on 12/Dec/19 Answered by mr W last updated on 12/Dec/19 Commented by mr W last updated on 12/Dec/19…
Question Number 9970 by Tawakalitu ayo mi last updated on 19/Jan/17 Answered by mrW1 last updated on 19/Jan/17 $${the}\:{result}\:{is}\:{a}\:{zero}\:{vector}\:{or}\:{null}\:{vector}\:\left(\overset{\rightarrow} {\mathrm{0}}\right). \\ $$$${a}\:{zero}\:{or}\:{null}\:{vector}\:{has}\:{no}\:{magnitude}. \\ $$ Commented…
Question Number 9836 by tawakalitu last updated on 06/Jan/17 $$\mathrm{Prove}\:\mathrm{that}. \\ $$$$\mid\mathrm{z}_{\mathrm{1}} \:+\:\mathrm{z}_{\mathrm{2}} \mid\:\leqslant\:\mid\mathrm{z}_{\mathrm{1}} \mid\:\mid\mathrm{z}_{\mathrm{2}} \mid \\ $$ Commented by FilupSmith last updated on 07/Jan/17…