Question Number 115696 by Dwaipayan Shikari last updated on 27/Sep/20 $$\mathrm{e}^{\mathrm{x}} =\mathrm{logx} \\ $$ Commented by Dwaipayan Shikari last updated on 27/Sep/20 $$\mathrm{e}^{\mathrm{x}} =\mathrm{logx} \\…
Question Number 181217 by Mastermind last updated on 23/Nov/22 Answered by Rasheed.Sindhi last updated on 23/Nov/22 $$\mathrm{3}^{{x}} \left(\mathrm{2}{x}+\mathrm{1}\right)^{\mathrm{2}} =\mathrm{225}=\mathrm{3}^{\mathrm{2}} \mathrm{5}^{\mathrm{2}} \\ $$$${x}=\mathrm{2}\:\wedge\:\mathrm{2}{x}+\mathrm{1}=\mathrm{5} \\ $$$$\Rightarrow{x}=\mathrm{2}\:\wedge\:\mathrm{2}\left(\mathrm{2}\right)+\mathrm{1}=\mathrm{5} \\…
Question Number 181218 by Mastermind last updated on 23/Nov/22 $$\mathrm{Solve}\:\mathrm{the}\:\mathrm{Differential}\:\mathrm{equation}: \\ $$$$\mathrm{x}\frac{\mathrm{dy}}{\mathrm{dx}}−\mathrm{y}=\mathrm{2y}\left(\mathrm{lnx}−\mathrm{lny}\right) \\ $$$$ \\ $$$$. \\ $$ Answered by qaz last updated on 23/Nov/22…
Question Number 181219 by Mastermind last updated on 23/Nov/22 $$\mathrm{Solve}\:\mathrm{the}\:\mathrm{D}.\mathrm{E} \\ $$$$\mathrm{x}\frac{\mathrm{dy}}{\mathrm{dx}}−\mathrm{y}=\sqrt{\mathrm{x}^{\mathrm{2}} +\mathrm{y}^{\mathrm{2}} } \\ $$$$ \\ $$$$. \\ $$ Answered by qaz last updated…
Question Number 115632 by m173 last updated on 27/Sep/20 Commented by m173 last updated on 27/Sep/20 find general solution Commented by MJS_new last updated on 27/Sep/20 $${y}={c}\mathrm{sin}\:{x}\:\mathrm{is}\:\mathrm{already}\:\mathrm{the}\:\mathrm{solution}?!…
Question Number 115487 by 171 last updated on 26/Sep/20 Commented by Dwaipayan Shikari last updated on 26/Sep/20 $$\mathrm{y}^{\mathrm{2}} =\mathrm{1}+\mathrm{1}\:\left(\mathrm{x}=\mathrm{1}\right) \\ $$$$\mathrm{y}=\pm\sqrt{\mathrm{2}} \\ $$$$\mathrm{y}^{\mathrm{2}} =\mathrm{1}+\mathrm{2}\Rightarrow\mathrm{y}=\pm\sqrt{\mathrm{3}} \\…
Question Number 181023 by mnjuly1970 last updated on 20/Nov/22 Answered by mr W last updated on 20/Nov/22 Commented by mr W last updated on 20/Nov/22…
Question Number 181015 by Mastermind last updated on 20/Nov/22 $$\mathrm{If}\:\mathrm{z}=\mathrm{xy}−\mathrm{7x}+\mathrm{4y},\:\:\:\mathrm{evaluate}\:\frac{\partial\mathrm{z}}{\partial\mathrm{x}\:}\:\mathrm{and}\:\frac{\partial\mathrm{z}}{\partial\mathrm{y}} \\ $$$$ \\ $$$$. \\ $$$$ \\ $$ Answered by CrispyXYZ last updated on 20/Nov/22…
Question Number 181014 by Mastermind last updated on 20/Nov/22 $$\mathrm{If}\:\mathrm{f}\left(\mathrm{x}\right)=\mathrm{3}−\mathrm{x}^{\mathrm{2}} ,\:\:\:\:\mathrm{find}\:\frac{\mathrm{f}\left(\mathrm{3}+\mathrm{h}\right)−\mathrm{f}\left(\mathrm{3}\right)}{\mathrm{h}} \\ $$$$ \\ $$$$. \\ $$ Commented by CElcedricjunior last updated on 20/Nov/22 $$\boldsymbol{{f}}\left(\boldsymbol{{x}}\right)=\mathrm{3}−\boldsymbol{{x}}^{\mathrm{2}}…
Question Number 49930 by OTCHRRE ABDULLAI last updated on 12/Dec/18 $${Please}\:{help}\:{me}\:{solve}\:{this}\:{question} \\ $$$${How}\:{many}\:\mathrm{4}\:{digits}\:{number}\:{with}\:{all}\:\:{digits}\: \\ $$$${different}\:{are}\:{tbere}\:{between}\:\mathrm{1000}\:{and}\:\mathrm{9999} \\ $$$${such}\:{tbat}\:{the}\:{difference}\:{between}\:{the}\:{first} \\ $$$${and}\:{the}\:{last}\:{digit}\:{is}\:{plus}\:{or}\:{ninus}\:\mathrm{3}. \\ $$$$ \\ $$ Answered by…