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Reduce-a-differential-equation-x-ax-bx-cx-0-where-a-b-c-are-constants-to-an-equivalent-system-of-first-order-equation-x-1-x-x-2-x-x-3-x-Thank-you-

Question Number 203568 by Mastermind last updated on 22/Jan/24 $$\mathrm{Reduce}\:\mathrm{a}\:\mathrm{differential}\:\mathrm{equation} \\ $$$$\mathrm{x}^{'''} \:+\:\mathrm{ax}^{''} \:+\:\mathrm{bx}^{'} \:+\:\mathrm{cx}\:=\:\mathrm{0}\:\left(\mathrm{where}\:\mathrm{a},\mathrm{b},\mathrm{c}\:\mathrm{are}\right. \\ $$$$\left.\mathrm{constants}\right)\:\mathrm{to}\:\mathrm{an}\:\mathrm{equivalent}\:\mathrm{system}\:\mathrm{of}\:\mathrm{first} \\ $$$$\mathrm{order}\:\mathrm{equation}. \\ $$$$\mathrm{x}_{\mathrm{1}} =\:\mathrm{x},\:\mathrm{x}_{\mathrm{2}} \:=\:\mathrm{x}^{'} ,\:\mathrm{x}_{\mathrm{3}} \:=\:\mathrm{x}^{''}…

Solve-the-following-equation-simultaneously-and-find-the-stationary-points-2xy-2-c-2-4x-3-y-2-2xy-4-0-1-2x-2-yc-2-2x-4-y-4x-2-y-3-0-2-Please-I-need-a-well-detail-cal

Question Number 203565 by Mastermind last updated on 22/Jan/24 $$\mathrm{Solve}\:\mathrm{the}\:\mathrm{following}\:\mathrm{equation}\:\mathrm{simultaneously} \\ $$$$\mathrm{and}\:\mathrm{find}\:\mathrm{the}\:\mathrm{stationary}\:\mathrm{points}: \\ $$$$\mathrm{2xy}^{\mathrm{2}} \mathrm{c}^{\mathrm{2}} \:−\:\mathrm{4x}^{\mathrm{3}} \mathrm{y}^{\mathrm{2}} \:−\:\mathrm{2xy}^{\mathrm{4}} \:=\:\mathrm{0}\:—–\left(\mathrm{1}\right) \\ $$$$\mathrm{2x}^{\mathrm{2}} \mathrm{yc}^{\mathrm{2}} \:−\:\mathrm{2x}^{\mathrm{4}} \mathrm{y}\:−\:\mathrm{4x}^{\mathrm{2}} \mathrm{y}^{\mathrm{3}}…

2x-5-3-

Question Number 203561 by nomanmahmud last updated on 22/Jan/24 $$\sqrt{\mathrm{2}{x}−\mathrm{5}+\mathrm{3}=?} \\ $$ Commented by Rasheed.Sindhi last updated on 22/Jan/24 $$\sqrt{\mathrm{2}{x}−\mathrm{2}}\:=\sqrt{\mathrm{2}\left({x}−\mathrm{1}\right)}\:=\sqrt{\mathrm{2}}\:\sqrt{{x}−\mathrm{1}}\: \\ $$ Terms of Service…

If-A-B-C-are-finite-sets-whose-elements-are-from-the-same-universal-set-U-and-n-A-denotes-the-number-of-element-in-the-set-A-a-Show-by-means-of-venn-diagram-that-n-A-B-n-A-n-B-n-A-B-

Question Number 203545 by Mastermind last updated on 21/Jan/24 $$\mathrm{If}\:\mathrm{A},\mathrm{B},\mathrm{C}\:\mathrm{are}\:\mathrm{finite}\:\mathrm{sets}\:\mathrm{whose}\:\mathrm{elements}\:\mathrm{are}\: \\ $$$$\mathrm{from}\:\mathrm{the}\:\mathrm{same}\:\mathrm{universal}\:\mathrm{set}\:\mathrm{U}\:\mathrm{and}\:\mathrm{n}\left(\mathrm{A}\right)\: \\ $$$$\mathrm{denotes}\:\mathrm{the}\:\mathrm{number}\:\mathrm{of}\:\mathrm{element}\:\mathrm{in}\:\mathrm{the}\:\mathrm{set}\:\mathrm{A} \\ $$$$\left(\mathrm{a}\right)\:\mathrm{Show}\:\mathrm{by}\:\mathrm{means}\:\mathrm{of}\:\mathrm{venn}\:\mathrm{diagram}\:\mathrm{that} \\ $$$$\mathrm{n}\left(\mathrm{A}\:\cup\:\mathrm{B}\right)\:=\:\mathrm{n}\left(\mathrm{A}\right)\:+\:\mathrm{n}\left(\mathrm{B}\right)\:−\:\mathrm{n}\left(\mathrm{A}\:\cap\:\mathrm{B}\right) \\ $$$$\left(\mathrm{b}\right)\:\mathrm{Using}\:\mathrm{the}\:\mathrm{fact}\:\mathrm{that}\:\left(\mathrm{A}\:\cup\:\mathrm{B}\:\cup\:\mathrm{C}\right)\:=\:\left(\mathrm{A}\cup\mathrm{B}\right)\cup\mathrm{C} \\ $$$$=\mathrm{A}\cup\left(\mathrm{B}\cup\mathrm{C}\right)\:\mathrm{deduce}\:\mathrm{an}\:\mathrm{expression}\:\mathrm{for} \\ $$$$\left(\mathrm{A}\cup\mathrm{B}\cup\mathrm{C}\right) \\…

Solve-for-x-3-x-2-15-x-1-

Question Number 203533 by Mastermind last updated on 21/Jan/24 $$\mathrm{Solve}\:\mathrm{for}\:\mathrm{x}\:: \\ $$$$\mathrm{3}^{\mathrm{x}+\mathrm{2}} =\mathrm{15}^{\mathrm{x}−\mathrm{1}} \\ $$ Answered by Rasheed.Sindhi last updated on 21/Jan/24 $$\mathrm{3}^{{x}+\mathrm{2}} =\mathrm{3}^{{x}−\mathrm{1}} \centerdot\mathrm{5}^{{x}−\mathrm{1}}…

Solve-4x-3-8xy-2-4x-0-1-8x-2-y-4y-0-2-simultaneosly-i-e-find-the-stationary-point-Thank-you-

Question Number 203525 by Mastermind last updated on 21/Jan/24 $$\mathrm{Solve}:\: \\ $$$$\mathrm{4x}^{\mathrm{3}} +\mathrm{8xy}^{\mathrm{2}} −\mathrm{4x}=\mathrm{0}\:—–\left(\mathrm{1}\right) \\ $$$$\mathrm{8x}^{\mathrm{2}} \mathrm{y}−\mathrm{4y}\:\:\:\:\:\:\:\:\:\:\:\:=\mathrm{0}\:—–\left(\mathrm{2}\right) \\ $$$$\mathrm{simultaneosly}\:\mathrm{i}.\mathrm{e}\:\mathrm{find}\:\mathrm{the}\:\mathrm{stationary}\:\mathrm{point} \\ $$$$ \\ $$$$ \\ $$$$\mathrm{Thank}\:\mathrm{you}…

Determine-the-maximum-and-minimum-of-the-function-f-x-y-x-4-4x-2-y-2-2x-2-2y-2-1-Thank-you-

Question Number 203526 by Mastermind last updated on 21/Jan/24 $$\mathrm{Determine}\:\mathrm{the}\:\mathrm{maximum}\:\mathrm{and}\:\mathrm{minimum}\:\mathrm{of} \\ $$$$\mathrm{the}\:\mathrm{function}: \\ $$$$\mathrm{f}\left(\mathrm{x},\mathrm{y}\right)=\mathrm{x}^{\mathrm{4}} +\mathrm{4x}^{\mathrm{2}} \mathrm{y}^{\mathrm{2}} −\mathrm{2x}^{\mathrm{2}} +\mathrm{2y}^{\mathrm{2}} −\mathrm{1} \\ $$$$ \\ $$$$\mathrm{Thank}\:\mathrm{you} \\ $$…

Find-the-maximum-value-of-the-function-f-x-y-x-2-y-2-z-2-subject-to-the-condition-that-x-2-y-2-z-2-c-2-where-c-is-the-constant-Thank-you-in-advance-

Question Number 203527 by Mastermind last updated on 21/Jan/24 $$\mathrm{Find}\:\mathrm{the}\:\mathrm{maximum}\:\mathrm{value}\:\mathrm{of}\:\mathrm{the}\:\mathrm{function} \\ $$$$\mathrm{f}\left(\mathrm{x},\mathrm{y}\right)=\mathrm{x}^{\mathrm{2}} \mathrm{y}^{\mathrm{2}} \mathrm{z}^{\mathrm{2}} \:\mathrm{subject}\:\mathrm{to}\:\mathrm{the}\:\mathrm{condition}\:\mathrm{that} \\ $$$$\mathrm{x}^{\mathrm{2}} +\mathrm{y}^{\mathrm{2}} +\mathrm{z}^{\mathrm{2}} =\mathrm{c}^{\mathrm{2}} ,\:\mathrm{where}\:\mathrm{c}\:\mathrm{is}\:\mathrm{the}\:\mathrm{constant}. \\ $$$$ \\ $$$$\mathrm{Thank}\:\mathrm{you}\:\mathrm{in}\:\mathrm{advance}…