Question Number 127094 by kolos last updated on 26/Dec/20 Commented by kolos last updated on 26/Dec/20 $${can}\:{anyone}\:{prove}\:{this}? \\ $$ Answered by mindispower last updated on…
Question Number 61559 by Tawa1 last updated on 04/Jun/19 Commented by Tawa1 last updated on 04/Jun/19 $$\mathrm{Find}\:\mathrm{the}\:\mathrm{length}\:\mathrm{of}\:\mathrm{the}\:\mathrm{pink} \\ $$ Answered by ajfour last updated on…
Question Number 192630 by Engr_Jidda last updated on 23/May/23 $${z}={xy}−\mathrm{5}{x}+\mathrm{2}{y}.\:{find}\:\frac{{dz}}{{dx}}\:{and}\:\frac{{dz}}{{dy}}\:{at}\left(\mathrm{2},\mathrm{4}\right) \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 192625 by Subhi last updated on 23/May/23 $${lim}_{{x}\rightarrow\mathrm{0}} \frac{{sin}^{\mathrm{4}} \left(\pi{cos}\left({x}\right)\right)}{\mathrm{1}−{cos}\left(\mathrm{1}−{cos}\left(\mathrm{1}−{cos}\left({x}\right)\right)\right)} \\ $$ Commented by Subhi last updated on 23/May/23 $${I}\:{got}\:\mathrm{8}\pi^{\mathrm{4}} \\ $$ Answered…
Question Number 127090 by physicstutes last updated on 26/Dec/20 $$\mathrm{Given}\:\mathrm{that}\: \\ $$$$\:\:\mathcal{I}_{{n}} \:=\:\underset{\mathrm{0}} {\overset{\mathrm{1}} {\int}}{x}\left(\mathrm{1}−{x}\right)^{{n}} {dx}\:,\:{n}\:\in\:\mathbb{Z}^{+} \\ $$$$\:\mathrm{show}\:\mathrm{that}\:\:\left({n}+\mathrm{2}\right)\mathcal{I}_{{n}} \:=\:{nI}_{{n}−\mathrm{1}} ,\:{n}\:\geqslant\:\mathrm{1}. \\ $$ Answered by Dwaipayan…
Question Number 192624 by sciencestudentW last updated on 23/May/23 $${cos}\mathrm{36}−{cos}\mathrm{72}=? \\ $$ Answered by som(math1967) last updated on 23/May/23 $$\mathrm{2}{sin}\mathrm{54}{sin}\mathrm{18} \\ $$$$=\mathrm{2}×\frac{\sqrt{\mathrm{5}}+\mathrm{1}}{\mathrm{4}}×\frac{\sqrt{\mathrm{5}}−\mathrm{1}}{\mathrm{4}} \\ $$$$=\mathrm{2}×\frac{\mathrm{5}−\mathrm{1}}{\mathrm{16}}=\frac{\mathrm{1}}{\mathrm{2}} \\…
Question Number 61554 by ajfour last updated on 04/Jun/19 Commented by ajfour last updated on 04/Jun/19 $${Find}\:{a},{b},\:{and}\:{s}. \\ $$ Answered by MJS last updated on…
Question Number 127088 by MathSh last updated on 26/Dec/20 $$\begin{cases}{{x}+{y}={k}}\\{{x}−\mathrm{3}{y}=\mathrm{6}}\end{cases} \\ $$$$\left({x}^{\mathrm{2}} −{y}^{\mathrm{2}} \right)_{{min}} =? \\ $$ Commented by hknkrc46 last updated on 26/Dec/20 $$\checkmark\:\boldsymbol{{x}}\:−\:\mathrm{3}\boldsymbol{{y}}\:=\:\left(\boldsymbol{{x}}\:+\:\boldsymbol{{y}}\right)\:−\:\mathrm{4}\boldsymbol{{y}}\:=\:\boldsymbol{{k}}\:−\:\mathrm{4}\boldsymbol{{y}}\:=\:\mathrm{6}…
Question Number 192623 by sciencestudentW last updated on 23/May/23 $${cot}\mathrm{70}+\mathrm{4}{cos}\mathrm{70}=? \\ $$ Answered by som(math1967) last updated on 23/May/23 $$\:{tan}\mathrm{20}+\mathrm{4}{sin}\mathrm{20} \\ $$$$=\frac{{sin}\mathrm{20}+\mathrm{4}{sin}\mathrm{20}{cos}\mathrm{20}}{{cos}\mathrm{20}} \\ $$$$=\frac{{sin}\mathrm{20}+\mathrm{2}{sin}\mathrm{40}}{\mathrm{cos}\:\mathrm{20}} \\…
Question Number 192622 by sg74656 last updated on 23/May/23 $$\frac{\mathrm{3}}{\mathrm{2}}\mathrm{cos}^{−\mathrm{1}} \sqrt{\frac{\mathrm{2}}{\mathrm{2}+\pi^{\mathrm{2}} }}+\frac{\mathrm{1}}{\mathrm{4}}\mathrm{sin}^{−\mathrm{1}} \frac{\mathrm{2}\sqrt{\mathrm{2}\pi}}{\mathrm{2}+\pi^{\mathrm{2}} }+\mathrm{tan}^{−\mathrm{1}} \frac{\sqrt{\mathrm{2}}}{\pi} \\ $$ Answered by witcher3 last updated on 24/May/23 $$\mathrm{nice}\:\mathrm{one}\:\mathrm{tchek}\:\mathrm{please}\:\mathrm{the}\:\mathrm{expression}\:\mathrm{if}\:\mathrm{it}\:\mathrm{is}\:\mathrm{correct}…