Question Number 10242 by FilupSmith last updated on 31/Jan/17 $${f}\left({x}\right)=\frac{\mathrm{sin}\left({x}+{n}\right)}{\mathrm{cos}\left({x}−{n}\right)} \\ $$$$\mathrm{if}\:{f}\left({x}\right)=\mathrm{1},\:\:{n}=?? \\ $$ Commented by arge last updated on 03/Feb/17 $${ojo}\:{con}\:{las}\:{identidades}\:{y}\:{derivadas}.\:{Salu}\mathrm{2}. \\ $$ Answered…
Question Number 10241 by FilupSmith last updated on 31/Jan/17 $$\int_{{a}} ^{\:{a}+\delta} \frac{\mathrm{sin}\left({x}\right)}{\mathrm{cos}\left({x}+\delta\right)}{dx}\:=\:??? \\ $$ Commented by prakash jain last updated on 31/Jan/17 $$\frac{\mathrm{sin}\left({x}\right)}{\mathrm{cos}\left({x}+\delta\right)}=\frac{\mathrm{sin}\left({x}+\delta−\delta\right)}{\mathrm{cos}\left({x}+\delta\right)} \\ $$$$=\frac{\mathrm{sin}\:\left({x}+\delta\right)\mathrm{cos}\:\delta−\mathrm{cos}\:\left({x}+\delta\right)\mathrm{sin}\:\delta}{\mathrm{cos}\:\left({x}+\delta\right)}…
Question Number 141308 by BHOOPENDRA last updated on 17/May/21 Answered by Dwaipayan Shikari last updated on 17/May/21 $$\boldsymbol{\mathrm{M}}=\boldsymbol{\mathrm{I}}+\underset{{n}=\mathrm{1}} {\overset{\infty} {\sum}}\frac{{t}^{{n}} }{{n}!}\boldsymbol{\mathrm{A}}^{{n}} \\ $$$$\boldsymbol{\mathrm{A}}=\begin{pmatrix}{−\mathrm{3}\:−\mathrm{1}}\\{\mathrm{8}\:\:\:\:\:\mathrm{3}}\end{pmatrix}\Rightarrow\boldsymbol{\mathrm{A}}^{\mathrm{2}} =\begin{pmatrix}{−\mathrm{3}\:\:−\mathrm{1}}\\{\:\:\mathrm{8}\:\:\:\:\:\mathrm{3}}\end{pmatrix}\begin{pmatrix}{−\mathrm{3}\:\:−\mathrm{1}}\\{\:\:\:\mathrm{8}\:\:\:\:\mathrm{3}}\end{pmatrix}=\begin{pmatrix}{\mathrm{1}\:\:\mathrm{0}}\\{\mathrm{0}\:\:\mathrm{1}}\end{pmatrix}=\boldsymbol{\mathrm{I}} \\…
Question Number 141311 by SOMEDAVONG last updated on 17/May/21 $$\mathrm{Show}\:\mathrm{that}\:,\mathrm{C}_{\mathrm{n}} ^{\mathrm{k}} +\mathrm{C}_{\mathrm{n}} ^{\mathrm{k}−\mathrm{1}} =\mathrm{C}_{\mathrm{n}+\mathrm{1}} ^{\mathrm{n}−\mathrm{k}} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
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Question Number 10237 by Tawakalitu ayo mi last updated on 30/Jan/17 $$\left(\mathrm{1}\right)\:\mathrm{4H}_{\mathrm{2}} \mathrm{O}\:\: \\ $$$$\left(\mathrm{2}\right)\:\mathrm{FeSO}_{\mathrm{4}} \:+\:\mathrm{K}_{\mathrm{2}} \mathrm{Cr}_{\mathrm{2}} \mathrm{O}_{\mathrm{7}} \\ $$$$\mathrm{help}\:\mathrm{in}\:\mathrm{balancing}\:\mathrm{ironically}\:\mathrm{and}\:\mathrm{atomically}. \\ $$ Answered by ridwan…
Question Number 75773 by Ajao yinka last updated on 16/Dec/19 Answered by mind is power last updated on 16/Dec/19 $$\mathrm{log}\left(\mathrm{1}+\mathrm{e}^{\mathrm{x}} \right)=\mathrm{x}+\mathrm{log}\left(\mathrm{1}+\mathrm{e}^{−\mathrm{x}} \right) \\ $$$$=\int_{\mathrm{0}} ^{+\infty}…
Question Number 10236 by Tawakalitu ayo mi last updated on 30/Jan/17 $$\mathrm{An}\:\mathrm{electron}\:\mathrm{moves}\:\mathrm{in}\:\mathrm{a}\:\mathrm{vacuum}\:\mathrm{between} \\ $$$$\mathrm{two}\:\mathrm{electrode}\:\mathrm{having}\:\mathrm{a}\:\mathrm{p}.\mathrm{d}\:\mathrm{of}\:\mathrm{3000v},\:\mathrm{calculate} \\ $$$$\mathrm{the}\:\mathrm{velocity}\:\mathrm{acquired}\:\mathrm{by}\:\mathrm{the}\:\mathrm{electon}\:\mathrm{if}\:\mathrm{the}\:\mathrm{ratio} \\ $$$$\mathrm{of}\:\mathrm{its}\:\mathrm{charge}\:\mathrm{to}\:\mathrm{mass}\:\mathrm{is}\:\mathrm{1}.\mathrm{8}×\mathrm{10}^{\mathrm{11}} \mathrm{Ckg}^{−\mathrm{1}} \\ $$ Answered by ridwan balatif…
Question Number 75770 by Ajao yinka last updated on 16/Dec/19 Commented by ~blr237~ last updated on 17/Dec/19 $$\mathrm{A}=\int_{\mathrm{0}} ^{\infty} \frac{\mathrm{dx}}{\mathrm{e}^{\mathrm{x}} \sqrt{\mathrm{sinh2x}}}\:=\sqrt{\mathrm{2}}\int_{\mathrm{0}} ^{\infty} \frac{\mathrm{e}^{−\mathrm{x}} \mathrm{dx}}{\:\sqrt{\mathrm{e}^{\mathrm{2x}} −\mathrm{e}^{−\mathrm{2x}}…
Question Number 141304 by BHOOPENDRA last updated on 17/May/21 Commented by BHOOPENDRA last updated on 17/May/21 $${a},{b},{c}\:{part} \\ $$ Terms of Service Privacy Policy Contact:…