Question Number 33969 by mondodotto@gmail.com last updated on 28/Apr/18 $$\boldsymbol{\mathrm{if}}\:\boldsymbol{\mathrm{tanA}}+\boldsymbol{\mathrm{tanB}}=\boldsymbol{\mathrm{P}}\:\boldsymbol{\mathrm{and}}\:\boldsymbol{\mathrm{AtanB}}=\boldsymbol{\mathrm{q}} \\ $$$$\boldsymbol{\mathrm{express}}\:\boldsymbol{\mathrm{the}}\:\boldsymbol{\mathrm{value}}\:\boldsymbol{\mathrm{of}}\:\boldsymbol{\mathrm{cos}}\left(\mathrm{2}\boldsymbol{\mathrm{A}}+\mathrm{3}\boldsymbol{\mathrm{B}}\right)\:\boldsymbol{\mathrm{in}}\:\boldsymbol{\mathrm{terms}}\:\boldsymbol{\mathrm{of}}\:\boldsymbol{\mathrm{p}}\:\boldsymbol{\mathrm{and}}\:\boldsymbol{\mathrm{q}}. \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on 28/Apr/18 $${let}\:{tanA}={a}\:\:{tanB}={b}\: \\ $$$${cos}\left(\mathrm{2}{A}+\mathrm{2}{B}+{B}\right) \\…
Question Number 99503 by DGmichael last updated on 21/Jun/20 Answered by MWSuSon last updated on 21/Jun/20 $$\mathrm{i}\:\mathrm{think}\:\mathrm{if}\:\mathrm{you}\:\mathrm{make}\:\mathrm{sin}^{\mathrm{2}} \mathrm{x}=\frac{\mathrm{1}}{\mathrm{2}}\left(\mathrm{1}−\mathrm{cos2x}\right) \\ $$$$\mathrm{it}\:\mathrm{will}\:\mathrm{be}\:\mathrm{easier}.. \\ $$$$\mathrm{f}\left(\mathrm{x}\right)=\mathrm{sin}^{\mathrm{2}} \mathrm{x} \\ $$$$\mathrm{f}^{\mathrm{n}}…
Question Number 99494 by mhmd last updated on 21/Jun/20 $${W}={f}\left({x},{y},{z}\right),{g}\left({x},{y}\right)={C}_{\mathrm{1}} \:,\:{h}\left({y},{z}\right)={C}_{\mathrm{2}} \:\:{find}\:\frac{{dw}}{{dx}}\:,\frac{{dw}}{{dy}}\:\:?\: \\ $$$$ \\ $$$${help}\:{me}\:{sir}\:{pleas}\:{i}\:{want}\:{this}\: \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 165015 by MathsFan last updated on 24/Jan/22 Commented by MathsFan last updated on 24/Jan/22 $${help}\:{please} \\ $$ Commented by MathsFan last updated on…
Question Number 33930 by mondodotto@gmail.com last updated on 27/Apr/18 $$\boldsymbol{\mathrm{Three}}\:\boldsymbol{\mathrm{forces}}\:\boldsymbol{\mathrm{of}}\:\boldsymbol{\mathrm{magnitude}}\:\mathrm{6}\boldsymbol{\mathrm{N}},\mathrm{2}\boldsymbol{\mathrm{N}} \\ $$$$\boldsymbol{\mathrm{and}}\:\mathrm{3}\boldsymbol{\mathrm{N}}\:\boldsymbol{\mathrm{act}}\:\boldsymbol{\mathrm{on}}\:\boldsymbol{\mathrm{the}}\:\boldsymbol{\mathrm{same}}\:\boldsymbol{\mathrm{point}}\:\boldsymbol{\mathrm{on}}\:\boldsymbol{\mathrm{the}} \\ $$$$\boldsymbol{\mathrm{north}},\boldsymbol{\mathrm{south}}\:\boldsymbol{\mathrm{and}}\:\boldsymbol{\mathrm{west}}\:\boldsymbol{\mathrm{directions}}\:\boldsymbol{\mathrm{respectively}}. \\ $$$$\boldsymbol{\mathrm{find}}\:\boldsymbol{\mathrm{the}}\:\boldsymbol{\mathrm{magnitude}}\:\boldsymbol{\mathrm{and}}\:\boldsymbol{\mathrm{direction}}\:\boldsymbol{\mathrm{of}}\:\boldsymbol{\mathrm{the}} \\ $$$$\boldsymbol{\mathrm{resultant}}\:\boldsymbol{\mathrm{force}}. \\ $$$$ \\ $$ Answered by MJS…
Question Number 164993 by mkam last updated on 24/Jan/22 $${solve}\:{by}\:{series}\:\int_{\mathrm{0}} ^{\:\infty} \:\frac{{sinx}}{{x}}\:{dx} \\ $$ Answered by Mathematification last updated on 24/Jan/22 $${I}'{m}\:{not}\:{sure}\:{that}\:{it}\:{can}\:{be}\:{solved}\:{by}\:{series}. \\ $$$${Let}'{s}\:{hear}\:{from}\:{the}\:{bosses}\:{first}. \\…
Question Number 164991 by mkam last updated on 24/Jan/22 $$\boldsymbol{{Solve}}\:\boldsymbol{{by}}\:\boldsymbol{{resideo}}\:\boldsymbol{{theorem}}\:\int_{−\infty} ^{\:\infty} \:\frac{\boldsymbol{{z}}^{\mathrm{2}} }{\boldsymbol{{z}}^{\mathrm{4}} +\mathrm{1}}\:\boldsymbol{{dz}} \\ $$ Commented by mkam last updated on 24/Jan/22 $$????? \\…
Question Number 164982 by alephzero last updated on 24/Jan/22 $$\mathrm{Prove},\:\mathrm{that}\:\frac{{a}}{{b}}\::\:\frac{{c}}{{d}}\:=\:\frac{{a}}{{b}}\:\centerdot\:\frac{{d}}{{c}} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 33899 by mondodotto@gmail.com last updated on 27/Apr/18 $$\boldsymbol{\mathrm{express}}\:\frac{\mathrm{4}\boldsymbol{\mathrm{t}}^{\mathrm{2}} −\mathrm{28}}{\boldsymbol{\mathrm{t}}^{\mathrm{4}} +\boldsymbol{\mathrm{t}}^{\mathrm{2}} −\mathrm{6}}\:\boldsymbol{\mathrm{as}}\:\boldsymbol{\mathrm{a}}\:\boldsymbol{\mathrm{partial}}\:\boldsymbol{\mathrm{fraction}}. \\ $$ Answered by MJS last updated on 27/Apr/18 $${t}^{\mathrm{4}} +{t}^{\mathrm{2}} −\mathrm{6}=\mathrm{0}…
Question Number 99429 by Ar Brandon last updated on 20/Jun/20 $$\mathrm{Solve}\:\mathrm{for}\:\mathrm{n}\:\mathrm{in}\:\mathrm{the}\:\mathrm{equation} \\ $$$$\mathrm{A}_{\mathrm{n}} ^{\mathrm{n}−\mathrm{2}} =\mathrm{56}\:\left\{\mathrm{where}\:\mathrm{A}_{\mathrm{n}} ^{\mathrm{r}} =\mathrm{n}−\mathrm{permution}\:\mathrm{r}\right\} \\ $$ Terms of Service Privacy Policy Contact:…