Category: Vector

Question Number 130889 by mnjuly1970 last updated on 30/Jan/21 $$\dots advancedmathematcs\dots$$$$provethat::$$$$\underset{n=1}{\sum ^{\mathrm{\infty }}}\frac{{(-1)}^n}{1+n^2}=\frac{csch\left(\pi \right)-1}{2}$$$$$$ Answered by mindispower…

Question Number 130537 by benjo_mathlover last updated on 26/Jan/21 Answered by EDWIN88 last updated on 26/Jan/21 $$\Leftrightarrow\:\overset{\rightarrow} {{a}}×\left(\overset{\rightarrow} {{b}}×\overset{\rightarrow} {{c}}\right)=\left(\overset{\rightarrow} {{a}}.\overset{\rightarrow} {{c}}\right)\overset{\rightarrow} {{b}}−\left(\overset{\rightarrow} {{a}}.\overset{\rightarrow} {{b}}\right)\overset{\rightarrow}…

Question Number 64348 by Rio Michael last updated on 16/Jul/19 $$thevectors\mathit{a}and\mathit{b}aresuchthat\mid \mathit{a}\mid =3,\mid \mathit{b}\mid =5and\mathit{a}.\mathit{b}=-14$$$$find\mid \mathit{a}-\mathit{b}\mid$$ Answered by Tanmay chaudhury last updated on 17/Jul/19 $$\mid\boldsymbol{{a}}−\boldsymbol{{b}}\mid^{\mathrm{2}} =\left(\boldsymbol{{a}}−\boldsymbol{{b}}\right).\left(\boldsymbol{{a}}−\boldsymbol{{b}}\right)…

Question Number 64085 by Rio Michael last updated on 12/Jul/19 $$pleasejustreadequationofalineandaplaneinvectors.$$$$i{don}^{\prime }tunderstand$$$$(\mathit{r}-\mathit{a})\times \mathit{b}=0??$$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 128830 by bemath last updated on 10/Jan/21 Answered by liberty last updated on 10/Jan/21 $$\mathrm{let}\mid \overrightarrow{a}\mid =\mid \overrightarrow{b}\mid =1;\mathrm{also}\mid \overrightarrow{a}+\overrightarrow{b}\mid =1$$$$\:\mathrm{we}\:\mathrm{want}\:\mathrm{to}\:\mathrm{compute}\:\mid\overset{\rightarrow} {{a}}−\overset{\rightarrow} {{b}}\:\mid\:.…